What Size Mower Blades Do I Need: Practical Guide for 2026

The IDEASURE 2501302 lawn mower blade is a no-nonsense replacement part designed for Greenwork 19-inch mower decks. If you own a Greenwork mower and the original blade has dulled or chipped, this is a direct swap that restores cutting performance without any guesswork. It's built for homeowners who want a reliable blade for routine mowing on small to medium lawns.

Performance wise, this blade delivers a clean, even cut across common grass types like Bermuda and fescue. The thick steel construction gives it enough rigidity to handle occasional bumps against rocks or roots without bending easily. It's not a high-lift or mulching blade, so it works best for standard side discharge or bagging setups. The 17.72 inch length fits the deck snugly, and the center hole lines up perfectly with the spindle.

Build quality is straightforward: a single piece of stamped steel with a black coating for basic corrosion resistance. It's not the thickest blade on the market, but it's plenty durable for typical residential use. Installation is simple, just remove the old blade with a socket wrench and bolt this one on. Be sure to torque it to spec and check for balance, though most users report it comes well balanced out of the box.

A realistic drawback is that this is a single blade pack. Some mowers use two blades, so double check your model. Also, the black coating may wear off over time, especially in sandy or rocky conditions. But for the price, it's a solid value for keeping your Greenwork mower running sharp all season.

Overall, the IDEASURE 2501302 is a practical choice for DIY homeowners who want a dependable, easy to install replacement blade. It won't win any awards for innovation, but it does exactly what it's supposed to do: cut grass cleanly and last through multiple mowing seasons. If you need a quick fix for a dull or damaged blade, this one is worth grabbing.

Brand: IDEASURE

Model: 2501302

Compatibility: Greenwork 19 inch lawn mowers

Blade Length: 17.72 inches

Blade Width: 1.97 inches

Blade Thickness: 0.71 inches

Center Hole Diameter: 0.88 inches

Material: High carbon steel

Finish: Black coated

Quantity: 1 blade per pack

The Husqvarna 587199603 is a genuine OEM 22-inch mulching blade designed for several of the brand's popular walk-behind mowers, including the HU700AWD, HU725AWD, and HU800AWDH series. While not a power tool itself, this blade is a critical wear item that directly affects the quality of your lawn cut. It replaces the standard high-lift blade that comes with most mowers, offering a dedicated mulching experience that many homeowners prefer.

From a performance standpoint, users consistently report a dramatic improvement in how fine the grass clippings are cut. Instead of leaving behind visible strips or clumps, the mulching blade produces a near-powdered mulch that settles into the lawn and breaks down quickly. One long-time user noted that even with the bag attached and chute open, the clippings compacted better than ever before, making disposal easier. This is a practical benefit for anyone who hates stopping to empty the bag mid-lawn.

Build quality is what you would expect from a genuine Husqvarna part. The metal construction feels solid and the black paint finish provides some corrosion resistance. A few reviewers did mention that the blade arrived on the dull side and required a quick filing before first use. This is not uncommon with OEM blades, and it is a minor step that ensures optimal cutting performance. Once properly sharpened, the blade holds an edge well through several mowing sessions.

The biggest limitation is compatibility. This blade only fits specific Husqvarna HU models with a 22-inch cutting deck, so you must verify your mower's model number before buying. Additionally, because it is optimized for mulching, it does not provide the same aggressive lift as a high-lift blade. If you regularly mow very tall or wet grass, you may experience some matting or reduced bagging performance. For normal weekly mowing in dry to damp conditions, this trade-off is well worth it for the superior mulching action.

Overall, the Husqvarna 587199603 is an excellent upgrade for anyone with a compatible mower who wants a cleaner, more professional-looking lawn. It is easy to install, delivers noticeable improvements in cut quality, and is backed by the reliability of an OEM part. If you already own one of the listed Husqvarna models, this blade is a simple and effective way to enhance your mowing experience without buying a new machine.

Brand: Husqvarna

Part Number: 587199603

Cutting Width: 22 inches

Material: Painted metal

Weight: 1.8 pounds

Compatible Models: HU700AWD, HU700F, HU700H, HU725AWD, HU725AWDE, HU725AWDEX, HU725AWDH, HU800AWDH

Replaces OEM: 587199601

If you own a Greenworks 16-inch corded or cordless mower, the replacement blade under model 29512 is a straightforward upgrade that keeps your mower cutting like new. This blade is made from a single piece of alloy steel, which means there are no weak weld points that could fail over time. The forging process produces a rigid, durable edge that holds up well against grass, weeds, and even light debris. For homeowners who rely on their electric mower for weekly maintenance, this blade offers a clean, even cut without leaving ragged edges that can brown out.

The installation process is simple. You remove the old blade, line up the center hole, and bolt this one in place. The 15.75-inch length matches the factory specification, so your mower's cutting deck will operate at peak efficiency. Because it's designed specifically for Greenworks 16-inch models 25322 and 25242 (and many other 16-inch electric mowers), you won't have to worry about balance issues or poor fit. Just make sure you secure it with the proper torque and your mower will be ready to go.

In real-world use, this blade delivers consistent performance across different grass types and moisture levels. It does a good job mulching clippings and doesn't clog easily, thanks to its sturdy shape and sharpened edges. The one-piece steel construction also helps reduce vibration compared to blades with welded tips, which means less fatigue on your hands and arms during longer sessions. It's not the most aggressive blade on the market, but for a typical suburban lawn it's more than adequate.

Build quality is solid. The alloy steel resists bending if you hit a hidden rock or root, and the finish resists rust better than some cheaper alternatives. That said, like any mower blade, it will eventually need sharpening. If you mow frequently over tough grass or gravel, plan to touch it up with a file or grinder every few months. The lightweight design (just under 0.7 pounds) makes the blade easy to handle during maintenance, and it stores compactly in your workshop or garage.

One limitation is that it's not a universal blade. It only fits 16-inch mowers with the specific center hole pattern. Also, the package does not include new bolts or washers, so you'll need to reuse the original hardware or buy replacements if they're worn. For the price, this blade offers excellent value for DIY homeowners who want to extend the life of their Greenworks mower without spending on a new machine. It's a practical, reliable choice that gets the job done neatly.

Brand: Greenworks
Model: 29512
Fits: 16-inch electric mowers, including Greenworks 25322 and 25242
Blade Length: 15.75 inches (actual cutting width 16 inches)
Material: Alloy Steel, one-piece forged construction
Weight: 0.69 pounds
Dimensions: 15.75 x 1.97 x 0.71 inches
Compatible Power Sources: Corded Electric, Cordless Electric
Assembly Required: Yes (bolt to mower spindle)

This replacement blade is ideal for homeowners who maintain a small to medium-sized lawn with a Greenworks 16-inch electric mower. It's perfect for routine weekly mowing of Bermuda, fescue, or rye grass. Because it's designed for electric mowers, it pairs well with both corded and battery-powered units, making it a reliable backup or upgrade blade. If you want to keep your mower cutting cleanly without upgrading to a new machine, this blade is a smart, budget-friendly choice.

Grasscool's 42-inch mulching blade set is a direct replacement for Craftsman, Husqvarna, and Poulan riding mowers with a 5-point star mounting pattern. Designed for homeowners and DIYers who maintain large lawns, these blades aim to deliver better mulching and bagging compared to standard OEM options. The set includes three blades that fit decks with a 42-inch cutting width, making them a practical upgrade for tractors like the LT1000, LT2000, and similar models.

In real-world use, the Grasscool blades cut cleanly and mulch grass into fine clippings that decompose quickly. The high-lift wings create strong airflow, which improves bagging performance and reduces the chance of clogging in wet or thick grass. Several reviewers note that the blades are thicker and heavier than original equipment, which translates to better durability on bumpy terrain. They arrive sharp enough for immediate use, though some users still touch up the edge for a razor finish.

Build quality is solid for the price point. The blades are made from hardened steel with a thick black coating that resists rust. They pass factory balance and hardness tests, so you can install them without worrying about vibration. While they are manufactured in China, the overall craftsmanship impresses most owners. The main drawback is compatibility: you must have the 5-point star hole pattern. If your mower uses a 6-point star, these won't work. Additionally, the blades may dull faster on sandy or rocky soil, but regular sharpening extends their life.

Overall, the Grasscool 42-inch mulching blade set is a smart buy for anyone looking to save money without sacrificing cut quality. They are especially suited for homeowners who mow regularly and want a durable, balanced blade that handles mulching and bagging equally well. If you can confirm your mower's mounting pattern, these blades offer reliable performance and excellent value.

Blade Length: 21 inches (533mm)

Blade Width: 2 1/4 inches (56.5mm)

Blade Thickness: 9/64 inch (3.5mm)

Center Hole Shape: 5 Point Star

Deck Size: 42 inches

Lift: 1 1/16 inches (27.5mm)

Blade Type: Mulching

Material: Iron (hardened steel)

Weight: 3 pounds per set

Replaces OEM Numbers: 134149, 532134149, 422719, 424752, 138971

These blades fit Craftsman, Husqvarna, Poulan, and Poulan Pro riding mowers and zero-turn mowers with 42-inch cutting decks that use a 5-point star mounting pattern. Compatible models include Craftsman LT1000, LT2000, Husqvarna YTH series (2009 and newer), RZ series zero-turns, Poulan PB19H42YT, PB20H42YT, and many others. Always verify your original blade's mounting pattern before ordering. If your blade has a 6-point star hole, use OEM numbers 942-0616A or 942-04308 instead.

The 8TEN LawnRAZOR Mower Blade 2-Pack is an aftermarket replacement mulching blade set tailored specifically for John Deere lawn tractors and residential zero-turn mowers equipped with 42-inch mower decks. Manufactured under 8TEN's LawnRAZOR line, this two-blade set serves as a direct cross-reference replacement for several original equipment manufacturer part numbers, including John Deere GX22151, GY20850, AM137328, AM137333, AM141031, AM141033, and UC21583. Each blade is finished in green and engineered to deliver improved cutting consistency during routine turf management.

This replacement blade set is best suited for DIY homeowners, residential property maintainers, and lawn tractor operators seeking a complete deck refresh for compatible 42-inch machines. Supported models span popular John Deere residential platforms, including the 100-series (102, 105, 115, 125, 135), D-series (D100 through D130), E-series (E100 through E130), and LA-series (LA100 through LA135). It also accommodates owners of select premium residential equipment, including the S240, LT160, LT180, X-series models such as the X300, X304, and X310 with 42-inch decks, as well as zero-turn models like the Z225 and Z235.

Looking at the physical specifications, each individual blade measures 21 7/16 inches in length, 2 3/4 inches in width, and features a steel gauge with a listed thickness of 0.1875 inches (3/16 inch). The mounting interface utilizes a dedicated 7-point star center hole, which directly matches the matching star spindle shaft configuration on compatible John Deere deck assemblies. The entire two-blade package lists an overall shipping weight of 5 pounds with package dimensions of 21.7 by 4 by 2 inches, providing both blades required for a standard dual-blade 42-inch deck setup.

From a maintenance and practical ownership perspective, proper installation requires aligning the 7-point star hole flush against the spindle assembly before securing the mounting hardware. Mounting hardware such as blade bolts and washers are not included with this set, so owners will need to inspect and reuse their existing factory hardware or source matching replacement fasteners. As standard safety practice during lawn mower maintenance, the spark plug boot should always be disconnected, and blade fasteners should be torqued in strict accordance with the mower manufacturer's service manual specifications.

While the blades offer broad compatibility across John Deere's 42-inch lineup, buyers must verify their mower spindle pattern prior to purchase, as these will not seat on decks requiring round or 5-point star centers. Furthermore, these blades are strictly proportioned for 42-inch decks and cannot be used on 48-inch or 54-inch configurations. For property owners operating compatible John Deere tractors needing a dependable 2-blade mulching replacement, the 8TEN LawnRAZOR set provides an exact dimensional match and clear OEM cross-referencing for seasonal lawn maintenance.

This 8TEN LawnRAZOR 2-pack is configured exclusively for John Deere 42-inch decks that utilize a 7-point star center mounting interface. Documented mower compatibility includes the John Deere 102, 105, 107S, 115, 125, 135, D100, D105, D110, D120, D125, D130, E100, E110, E120, E130, LA100, LA105, LA110, LA115, LA120, LA125, LA135, S240, X105, X110, X120, X125, X145, X305R, Z225, Z235, X300, X304, X310, LT160, LT180, SST15, and SST16.

To verify proper fitment, buyers should confirm that their existing spindle shaft features the 7-point star pattern and cross-reference their manual with OEM part numbers GX22151, GY20850, AM137328, AM137333, AM141031, AM141033, or UC21583 before ordering.

Each blade in this 2-pack measures 21 7/16 inches in total length and 2 3/4 inches in blade width. The blade material has a listed thickness of 0.1875 inches, delivering substantial structural rigidity for regular mulching duties.

The package carries a total listed weight of 5 pounds with package dimensions of 21.7 by 4 by 2 inches. Both blades arrive finished in a protective green coating designed to cover the steel surface during transit and storage.

Maintaining a pristine suburban lawn with an automated robotic mower requires sharp, dependable blades. The FOTEEMO 30-pack titanium-coated robotic lawn mower blades are aftermarket replacements designed to fit widely used robotic mowers like Husqvarna Automower and Gardena units. These blades are well-suited for busy suburban homeowners, tech-savvy lawn enthusiasts, and eco-conscious yard owners who depend on daily automated cutting to keep their grass manicured without pushing a heavy gas mower.

When robotic mowers operate with dull blades, they tear grass blades rather than slicing them cleanly, which leads to unsightly brown tips and lawn dehydration. At 0.75 mm thick, these stainless steel blades feature a fine, razor-sharp edge that provides a clean, even trim across every pass. A clean slice allows turf to heal quickly, reducing lawn stress during hot summer dry spells. Because robotic units cut in continuous micro-cycles, having a sharp cutting profile ensures minimal resistance against the motor, helping the mower preserve battery runtime per charge cycle.

Each blade in this set features a gold-tone titanium coating applied over durable stainless steel. This surface treatment provides valuable resistance against moisture, lawn fertilizer salts, and plant acidity, preventing premature rust and edge degradation during damp spring mornings. In addition to the blades, the set includes brand-new mounting screws, which is crucial because old screws can strip, rust, or loosen after prolonged vibration on uneven ground. The balanced weight distribution helps the cutting disc spin freely without causing unwanted vibration in the mower chassis.

Swapping out blades on a robotic mower is one of the simplest DIY maintenance tasks a homeowner can perform. Using a standard screwdriver, replacing the three swinging blades takes less than five minutes on a Saturday morning. With 30 blades in the pack, homeowners have enough stock to change blades every few weeks through spring, summer, and peak fall growth without constantly needing to reorder. Storing the compact pack on a garage pegboard or workbench shelf takes up practically zero space.

While these blades deliver reliable everyday cutting performance, they are designed to swing freely on impact, meaning hidden rocks, fallen twigs, or surface tree roots can still nick or dull the edge over time. Homeowners with bumpy yards or heavy tree cover should do a quick sweep for fallen branches before daily scheduled runs. For owners of Husqvarna, Gardena, or Yard Force robot mowers seeking an economical, sharp, and rust-resistant alternative to pricey original factory parts, this 30-pack is a sensible choice for keeping your grass green and evenly clipped all season long.

The FOTEEMO replacement blades utilize a stainless steel core treated with a specialized titanium coating. This layer acts as a barrier against moisture and lawn chemicals that commonly cause pitting and rust on standard steel blades. Robotic mowers operate in dew-covered grass, light rain, and moist soil conditions, making corrosion resistance essential for extending the working life of the cutting edge.

At 0.75 mm in thickness, the blades strike a practical balance between edge retention and flexibility. When rotating on the cutting disc, the blades swing out via centrifugal force. If a blade strikes a solid pebble or pinecone, the swinging mount allows it to pivot back, reducing the likelihood of snapping. The included replacement screws feature fresh threads to ensure a snug fit that keeps each blade safely anchored while permitting free rotation.

Routine blade inspection is vital for keeping an automated mower running efficiently. Homeowners should plan to inspect the underside of the mower every two to four weeks during the active growing season. If grass tips start showing white or brownish frayed edges, the blades are likely becoming dull and should be swapped out promptly.

Before changing blades, turn off the mower master switch and wear safety gloves to protect your hands from the sharp edges. Remove the three old screws, wipe away any caked clippings from the mounting disc, and install three new blades using the fresh screws provided in the pack. Avoid overtightening so the blades can pivot smoothly on their mounting posts, ensuring balanced operation and reliable cutting performance.

The NOIWEOPIEN 21-Inch Lawn Mower Mulching Blade Set is a two-pack replacement kit engineered for select 21-inch walk-behind lawn mowers. Specifically targeted at DIY homeowners, property maintenance caretakers, and lawn equipment owners, this set provides a direct replacement for OEM part numbers 72531-VH7-000 (upper blade) and 72511-VH7-000 (lower blade). It is best suited for operators of compatible Honda HRR216 and HRX217 series walk-behind mowers who need to replace dull, worn, or nicked cutting edges to maintain consistent turf health.

This set utilizes a specialized twin-blade architecture that combines an upper mulching blade with a lower high-lift blade. According to the manufacturer, the upper blade is configured with a 6-25/32 inch cutting edge to chop grass clippings into fine mulch, while the lower blade features a 3-15/32 inch cutting edge with a 13/16 inch air lift. This dual-action design helps generate the airflow required to lift grass blades upright for an even cut, while simultaneously supporting cleaner clipping discharge and bagging efficiency.

Fitment verification is essential before ordering or installing replacement blades. The blades measure 20-13/16 inches (528mm) in length, 3-5/32 inches (80mm) in width, and 1/8 inch (3mm) in thickness. The mounting interface features a 13/16-inch (20.8mm) center hole diameter paired with 13/32-inch (10.3mm) outer hole diameters. Documented model compatibility covers numerous HRR216 configurations ranging from K5 through K11 suffixes, as well as select HRX217 models such as HRX217HMA and HRX217HXA. Buyers should confirm their deck diameter and existing hole pattern, as a 21-inch deck designation alone does not guarantee universal fit across different mower brands or deck designs.

Constructed from heavy-duty hardened steel, these replacement blades are built to withstand standard residential turf conditions, impact from minor debris, and general operational wear. The manufacturer notes that each blade arrives pre-sharpened and treated with a protective black coating intended to protect the metal during transit and storage. This surface coating naturally wears off along the friction zones during initial mowing sessions. In addition, the balanced structural design helps minimize deck vibration during operation, supporting smoother mechanical performance.

Practical ownership requires routine attention to maintenance guidelines. Installation hardware such as replacement bolts and washers is not included, requiring owners to inspect and reuse their existing hardware or source new factory-spec fasteners. When mounting or servicing blades, users should always ensure the mower engine is completely shut off and the spark plug boot is disconnected in accordance with manufacturer safety procedures. Overall, this NOIWEOPIEN twin-blade replacement set represents a practical, value-oriented solution for residential mower owners seeking to restore cutting performance with accurately sized replacement components.

Direct fitment depends on matching mower model series, deck size, and mounting hole geometry. This blade set is designed for 21-inch walk-behind decks and serves as a direct cross-reference for OEM numbers 72531-VH7-000 and 72511-VH7-000. Compatible walk-behind models listed by the manufacturer include Honda HRR216 series (HRR216K5VXAA, HRR216K6VKAA, HRR216K6VXAA, HRR216K7VKAA, HRR216K7VXAA, HRR216K8PKAA, HRR216K8VKAA, HRR216K9VKAA, HRR216K9VLAA, HRR216K9VYAA, HRR216K10VKAA, HRR216K10VLAA, HRR216K10VYAA, HRR216K11PKAA, HRR216K11VKAA, HRR216K11VLAA, HRR216K11VYAA) and HRX217 series (HRX217HMA, HRX217HXA).

Physical dimensions must match the host mower deck setup. Each blade measures 20-13/16 inches (528mm) long, 3-5/32 inches (80mm) wide, and 1/8 inch (3mm) thick, with a 13/16-inch (20.8mm) center hole and 13/32-inch (10.3mm) outer holes. Matching both the center hole and outer alignment holes is critical to ensure proper mounting onto the mower spindle assembly.

Safe handling and routine blade maintenance are critical for personal safety and optimal equipment performance. Before inspecting, removing, or installing mower blades, always ensure the engine is fully turned off, the ignition key is removed if applicable, and the spark plug wire is disconnected to prevent accidental starting. Heavy-duty work gloves should always be worn when handling mower blades to protect against sharp cutting edges.

Owners should inspect blades periodically for nicks, severe dulling, cracks, or bends caused by hidden yard obstacles. If reusing original mounting hardware, inspect the blade bolts and washers for thread wear or distortion, and tighten all fasteners according to the mower manufacturer specified torque ratings using an appropriate blade-blocking tool.

The Fismiuta mulching blade set is a replacement twin-blade system designed specifically for Honda HRN216 walk-behind mowers. It mirrors the OEM twin blade layout, pairing an upper mulching blade with a lower high-lift blade. Together, they work to cut grass, lift it for a second pass, and then shred the clippings into fine pieces that settle into the lawn.

This set is best for homeowners and DIY lawn care enthusiasts who want to keep their Honda HRN216 running at peak performance without spending dealership-level money. If you are dealing with clumps after mowing, dull blades, or poor bagging, swapping in this set is a direct fix. It is also a solid upgrade for anyone who wants a cleaner looking lawn with less effort.

In real-world use, the high-lift lower blade creates strong airflow that stands grass up before the upper blade cuts it. The mulching geometry then reduces clippings to a fine texture that decomposes quickly and returns nutrients to the soil. Bagging also improves because the smaller particles pack tighter. The factory-balanced construction keeps vibration in check, which means a smoother mowing session and less stress on the engine and deck.

Build quality looks strong for the price. The blades are made from high-carbon hardened steel, and the powder-coated finish resists rust and corrosion. Mounting holes line up properly with the Honda spindle, so installation is a straightforward job. You will need a socket or wrench to remove the old blade bolt, and you will reuse that same hardware since the set does not include new bolts.

The main limitation is that this set only fits Honda HRN216 models, not other Honda mower series. You will need to confirm your exact sub-model before ordering. Also, if you never mulch or bag and always use side discharge, you won't see much benefit. But for HRN216 owners who want better mulching and bagging performance, this twin blade set is a practical, reliable choice that delivers real results.

This mulching blade set is a direct replacement for OEM part numbers 72511-VR8-M00 (lower blade) and 72531-VR8-M00 (upper blade). It fits Honda HRN216 Series walk-behind mowers with model codes PKA, PKAA, VKA, VKAA, VLA, VLAA, VYA, and VYAA.

Before ordering, verify that your mower's serial number falls within the MANA 1000001-9999999 range to ensure a seamless fit.

Remove the spark plug wire before working on the mower deck. Tilt the mower with the carburetor side up to avoid oil leaks. Use a socket or wrench to remove the blade bolt, then carefully remove the old blade.

Place the new blades in the correct orientation: the upper mulching blade goes on top, the lower high-lift blade goes on the bottom. Torque the bolt to your mower manufacturer's specification, and hand spin the blade to make sure it doesn't hit the deck. Reconnect the spark plug wire before starting.

The SENIX 21-inch replacement mower blade is an essential yard care accessory tailored for homeowners, suburban lawn owners, and property caretakers who rely on compatible SENIX gas walk-behind mowers. Specifically engineered for models such as the LSPG-L6 and LSPG-M14, this durable cutting blade offers a convenient DIY solution for replacing dull, worn, or nicked factory blades. Keeping a sharp blade installed is one of the most effective ways to preserve lawn health, preventing ragged grass tears that invite disease and discoloration across your yard.

Performance under the mower deck relies heavily on proper aerodynamic circulation, and this blade features a high-lift contour designed to optimize airflow. As the blade rotates, it creates a vacuum effect that pulls flattened grass blades upright just before the cutting edge makes contact. This airflow dynamic results in an even, manicured finish on front lawns and backyards, while simultaneously propelling grass clippings into the collection bag or out through the discharge chute without clumping on damp morning turf.

In terms of construction, the blade is formed from heat-treated carbon steel designed to withstand regular contact with small branches, pine cones, and turf debris. Its durable structure resists bending and edge deformation under typical residential mowing workloads. A protective black coating helps shield the raw steel from moisture and acidic plant juices, reducing the risk of rust formation when your mower is parked in a garage, outdoor shed, or basement between weekend lawn maintenance sessions.

Swapping the blade is simple enough for budget-conscious DIYers and first-time equipment owners. The mounting center and positioning holes match original factory specifications, ensuring a tight, balanced alignment against the mower crankshaft adaptor. Homeowners only need basic hand tools like a socket wrench and a block of wood to secure the blade while loosening the retaining bolt. For personal safety, always disconnect the spark plug boot and wear thick work gloves before reaching underneath the mowing deck.

While this replacement part offers great value for compatible SENIX machines, its specific design means it will not fit other mower brands or alternative deck sizes. Users will also need to retain their existing mounting hardware, as extra bolts and washers are not included in the box. For suburban homeowners and lawn care enthusiasts seeking to restore factory-level cutting precision and tidy clipping dispersal to their SENIX LSPG mower, this 21-inch blade serves as a dependable, budget-friendly seasonal upgrade.

Constructed from thick carbon steel that undergoes heat treatment, this replacement blade provides the structural integrity needed to tackle thick grass and seasonal yard debris. The hardened steel core helps the cutting edge maintain its sharpness longer than softer aftermarket alternatives, minimizing the frequency of edge touch-ups throughout the growing season.

The outer surface features a durable dark coating that guards against environmental rust and moisture exposure. Because the blade is precisely weighted and balanced at the factory, it spins smoothly beneath the deck without generating the excess vibration that can wear down engine bearings and mower hardware over time.

Routine blade inspection is a critical part of seasonal outdoor power equipment upkeep. Homeowners should inspect the blade edge periodically, especially after mowing over exposed tree roots, gravel borders, or hidden garden rocks. Always ensure the mower engine is completely cool and the spark plug wire is disconnected before inspecting the underside of the deck.

Scraping away caked-on grass and mud after mowing wet lawns helps preserve the protective coating and maintains optimal deck airflow. If the cutting edge shows minor dulling from regular use, it can be touched up with a standard metal file or bench grinder, provided equal material is removed from both ends to preserve balance.

The 8TEN LawnRAZOR toothed mower blade is an aftermarket replacement designed for a broad range of walk-behind mowers from MTD, Cub Cadet, and Troy Bilt. It's specifically made for 21-inch decks and replaces OEM part numbers like 942-0741A, 942-0741, and 742-0741. This blade is a practical choice for homeowners who want to restore their mower's cutting performance without paying premium prices for original equipment.

Installation is straightforward thanks to the standard 11/16-inch center hole and the blade's balanced design. It slots right onto the spindle and bolts down with the existing hardware. The 20-3/4-inch length and 2-1/4-inch width match OEM specs, so you won't have clearance issues on most compatible decks. The toothed edge is the standout feature here it chops grass into finer clippings, which is ideal for mulching. You'll see less clumping on the lawn and a more even distribution of nutrients back into the soil.

Build quality is decent for an aftermarket blade. The steel is thick enough (0.125 inches) to handle occasional impacts from rocks or roots without bending out of shape. It's also lightweight, which helps reduce vibration and keeps the mower engine from working as hard. That said, it's not quite as tough as some premium OEM mulching blades, but for routine residential mowing it holds up well. Sharpness out of the box is good, and the cutting edge stays effective through several seasons with proper care.

The main limitation is that this is a single blade. Many modern mowers use a twin-blade system for better lift and mulching, so you may need to buy two. Also, because it's an aftermarket product, you should verify compatibility with your exact mower model before ordering. The compatibility list is extensive, but it's always worth confirming. Some users might prefer a flat blade for side discharge mowing, but the toothed design works well in both modes.

Overall, the 8TEN LawnRAZOR blade is a smart buy for anyone who owns a compatible MTD, Cub Cadet, or Troy Bilt mower and wants to improve mulching performance without spending a lot. It delivers reliable cutting, easy installation, and solid durability for typical lawn care. Just make sure your deck is 21 inches and your spindle pattern matches, and you'll have a blade that keeps your yard looking sharp.

Brand: 8TEN
Product: LawnRAZOR Mower Blade (Toothed)
Length: 20-3/4 inches
Width: 2-1/4 inches
Center Hole: 11/16 inch
Thickness: 0.125 inch
Weight: 0.1 pounds
Color: Green
Pack Quantity: 1 Blade
Compatible OEM Part Numbers: 942-0741A, 942-0741, 742-0741, 742-04276, SPM209370365

This blade fits a wide range of MTD, Cub Cadet, and Troy Bilt walk-behind mowers with 21-inch decks. Some of the many compatible models include: Cub Cadet CC439, CC949, CC989, CC997ES, CC999ES, CC99M, SC500E, SC500HW, SC500Z; Troy Bilt Tru-Cut 100-320 series, TB 105-390 series; MTD RM105, RM110, RM120, RM210, RM220. Always double-check your mower's deck size and spindle pattern before purchasing.