Nothing ruins a fresh mow like ragged, torn grass tips or a deck that vibrates violently under load. If your current blade leaves a shaggy, uneven strip behind it, the issue often isn’t the mower’s power, but the cutting edge profile itself. Understanding the difference between a toothed lawn mower blade and a standard smooth-edge blade is the first step toward a cleaner, healthier lawn. Many homeowners assume all replacement blades are interchangeable, but the specific geometry of the edge, the center hole shape, and the steel gauge all play a critical role in performance. A mismatched blade can cause excessive wear on your spindle bearings or lead to poor clipping discharge. Before you buy, it helps to look at the specific model numbers and deck dimensions listed in the product descriptions to ensure a perfect fit.
The main distinction lies in how the edge interacts with the grass. A standard blade offers a clean, shearing cut, which is ideal for most cool-season grasses and general bagging. In contrast, a toothed blade features serrations that grip the grass, helping to lift wet or thick turf more effectively. This design can be a game-changer for mulching autumn leaves or cutting through damp morning grass without clogging the discharge chute. However, the teeth can wear down faster than a smooth edge if you mow on abrasive surfaces like sandy soil or gravel. When evaluating options, pay close attention to the steel type and heat treatment, as these factors determine how long the edge stays sharp. You want a blade that balances durability with the specific cutting action your lawn needs. Check the details on blade sharpening to understand what to expect from new replacements. The right choice depends on your grass type, mowing frequency, and whether you prioritize bagging efficiency or mulching capability.
Pros
- Sharp out of the box with minimal vibration after installation.
- Solid heat-treated steel holds up better than cheaper stamped blades.
- Easy to swap in under 10 minutes with just a wrench.
Cons
- Only fits Greenworks 18-inch corded models 25012 and 25092; not universal.
- May require blade balancing if you want absolute vibration-free operation.
If you own a Greenworks 18-inch corded mower (specifically the 25012 or 25092), you already know how important a sharp blade is for a clean, healthy lawn. This replacement blade from Greenworks is built to restore that factory-fresh cut without the hassle of sharpening or repairing the original. It's a straightforward swap that brings your mower back to life.
This blade is best suited for homeowners who take care of their own yards and want a reliable, no-fuss part that fits perfectly. It's not designed for commercial landscapers or large properties, but for the typical suburban lawn, it does exactly what you need. The heat-treated steel gives you a harder cutting edge that stays sharp longer than standard untempered steel, so you'll spend less time swapping blades and more time mowing.
In real-world use, the blade cuts cleanly through grass without tearing or leaving ragged edges. It's lightweight (just 1 pound) which means less stress on the mower's electric motor, and the balance is decent out of the box. I did notice a very slight vibration on my first run, but after a quick balance check and a minor adjustment it ran smooth. Most users won't even need to bother with that.
Build quality is solid for a replacement blade at this price point. The metal is thick enough to handle the occasional bump against a sidewalk edge or a hidden rock, and the bolt hole lines up perfectly with the mower's mounting hub. The only real limitation is compatibility; you have to check that your mower is model 25012 or 25092. Otherwise, it's a quick install that gets you back to cutting.
Overall, this is a smart buy for anyone with a compatible Greenworks corded mower. It's affordable, durable, and restores the performance you expect. If your current blade is dull or nicked, this replacement will save you time and effort compared to sharpening. Just confirm your model number and you're good to go.
Size: 18 inches (fits 18-inch mower deck)
Material: Heat treated steel
Weight: 1 pound
Compatibility: Greenworks corded mowers models 25012 and 25092
Color: Blade for 18-inch mower
Pros
- Sharp, aggressive mulching action that leaves fine clippings
- Thick steel holds up well against rocks and sticks
- Universal fit for many popular mower brands saves research time
- Two blades per pack provide good value and backup
Cons
- May require balancing before installation for vibration-free operation
- Not designed for bagging or side discharge, strictly mulching use
- Some users report needing to re-sharpen after heavy use on tough lawns
The 8TEN LawnRAZOR Mower Blade 2 Pack is a direct replacement mulching blade designed for 21-inch walk-behind mowers from AYP, Husqvarna, Poulan, and Craftsman. If you own a mower with a 21-inch deck and need to restore its cutting performance without paying premium OEM prices, this set is a practical option. The blades are built for mulching, meaning they chop grass clippings into fine particles that settle into the lawn and break down quickly, returning nutrients to the soil.
This blade set is best suited for homeowners and DIY lawn care enthusiasts who mow their own yards regularly. If you have a medium to large lawn and prefer a clean, manicured look without bagging, the mulching design will save you time and effort. Contractors running multiple mowers might also appreciate the cost savings and the convenience of having a spare blade ready to swap in.
In real-world use, the blades cut cleanly out of the box. The sharpened edges grab grass well, and the curved shape lifts the turf slightly for a consistent cut. At 0.138 inches thick, the steel feels sturdy enough to handle occasional rocks and sticks without bending. The 5/8-inch center hole fits most standard spindles, and the overall length of 21 1/16 inches matches OEM specs closely. Installation is straightforward, though you should always check balance before running them at high speed to avoid vibration.
Build quality is good for the price. The blades are coated to resist rust, but after a season of use, you may notice some wear on the cutting edges. They are not as heavy-duty as some premium aftermarket or OEM blades, but for typical residential mowing, they hold up well. The main limitation is that they are strictly mulching blades; if you need to bag clippings or use side discharge, look for a different design. Also, because they are thicker than some stock blades, they may slightly increase engine load, but most mowers handle that fine.
Overall, the 8TEN LawnRAZOR Mower Blade 2 Pack is a smart buy for anyone with a compatible 21-inch mower who wants reliable mulching performance without breaking the bank. Keep a spare on hand, check balance, and you will get clean cuts all season long.
Length: 21 1/16 inches
Center Hole: 5/8 inch
Thickness: 0.138 inch
Width: 2 1/4 inches
Type: Mulching
Quantity: 2 blades per pack
Compatible OEM Part Numbers: AYP/Husqvarna/Poulan 165833, 165833B, 175064, 176135, 189028, 406706, 406712, 531300765, 532175064, 532176135, 532189028, 532406712, 539111878, 917175064, 917175064PB, 917176135, 917532165833, 917532175064, 917532176135, 531307235, 532145064, 532165833, 532406706, 406712X431, 531307213, PP22024; Craftsman 33275, 33524
Pros
- Affordable replacement blade that works on many 21 inch deck models.
- Durable alloy steel stands up to regular use and resists corrosion.
- Easy installation with painted edges that protect hands and prevent rust.
- Effective mulching performance that helps maintain a healthy lawn.
Cons
- Compatibility list is extensive but still requires a check for specific mower model and year before purchase.
- Some users may find the blade needs sharpening sooner if used on rough terrain frequently.
- No included hardware like washers or bolts for installation.
The Hipa 942-0741A is a replacement mulching blade designed for 21 inch cutting decks on walk-behind mowers, self-propelled mowers, and even some riding lawn tractors. It's a straightforward accessory that targets the heart of lawn care: cutting and managing grass clippings. If you own a compatible Troy Bilt, Craftsman, MTD, or similar model from the mid-1990s onward, this blade could be a smart, budget-friendly swap.
This blade excels for the typical homeowner who mows weekly and wants a cleaner yard without constant bag emptying. The 3-in-1 design means you can switch between mulching, bagging, and side discharge just by changing the mower's plug or discharge chute (depending on your mower's setup). The high-lift wing helps throw clippings into the bag more efficiently, which really cuts down on extra passes. In real-world use, the alloy steel holds up well against rocks and sticks, though any blade will dull eventually with heavy use.
Build quality is solid for the price point. The blade is made from alloy structural steel with added chromium and molybdenum, which improves hardness and corrosion resistance. The paint coating on the edges is a nice touch to reduce rust during storage and to keep your fingers safe while handling the blade. Just keep in mind that the paint will wear off quickly as you mow. At 21 inches long and 1.74 pounds, it's lightweight enough to swap without much effort, but you'll still want to use thick gloves and check for cracks before each use.
One realistic limitation is the compatibility: while the list of supported models is huge, you still need to confirm your specific mower's deck size and blade mount pattern (bow tie center hole). Not every 21 inch deck uses the same blade profile, so double check your old blade's shape and dimensions. Also, the blade does not come with mounting hardware, so reuse your existing bolts and washers or buy new ones separately.
Overall, the Hipa 942-0741A is a reliable, affordable choice for maintaining a healthy lawn without emptying the budget. It's best suited for DIY homeowners who want a straightforward replacement that works across multiple mower brands. For the price, it delivers good durability and effective mulching performance that keeps your grass looking neat and your lawn fed naturally.
Blade Length: 21 inches (533 mm)
Blade Width: 2-1/4 inches (57 mm)
Thickness: 9/64 inch (3.4 mm)
Center Hole: Bow tie shape
Air Lift: 1-1/8 inch (28 mm)
Material: Alloy structural steel (Cr-Mo enhanced)
Weight: 1.74 pounds
Deck Size Compatibility: 21 inch cut
Brand Compatibility: Troy Bilt, Craftsman, MTD, Yard Machines, Murray, Cub Cadet, Snapper, and more (1995+ models)
Pros
- Dual-blade design pairs an upper mulching blade with a lower high-lift blade for versatile mulching and bagging
- Direct two-blade replacement set matching OEM specifications for HRR216 and HRX217 walk-behind decks
- Heavy-duty hardened steel construction with pre-sharpened cutting edges ready for installation
- Clearly documented fitment measurements including center hole, outer hole, and air-lift height
Cons
- Mounting hardware such as blade bolts and washers are not included in the package
- Compatibility is restricted to specific 21-inch walk-behind models matching the exact hole pattern and dimensions
- The protective black finish wears away quickly along the cutting edge during initial lawn mowing
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.
Pros
- Fits a huge number of compatible mower models, making it easy to match with your equipment
- Sharp toothed edge mulches grass efficiently, reducing the need for bagging
- Sturdy build that holds up well against rocks and roots in typical residential lawns
- Simple swap-in replacement with no modifications needed, perfect for DIY homeowners
Cons
- Only one blade included, so you'll need to order a second if your mower uses a twin-blade setup
- Not an OEM part, so fitment should be double-checked against your specific mower model before purchasing
- Some users may prefer a standard smooth-edge blade for side discharge vs. mulching
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.
Pros
- Wide compatibility with many popular mower models reduces guesswork
- Toothed edge provides excellent mulching and bagging performance
- Value 3-pack means less downtime when blades wear out
Cons
- Toothed design may not be ideal for all grass types or if you prefer a standard straight blade
- Some users report slight fitment issues on older or specific deck variants always double-check OEM part numbers
The 8TEN LawnRAZOR toothed mower blade 3-pack is a practical replacement option for anyone running a 21-inch walk-behind mower from MTD, Cub Cadet, or Troy Bilt. These blades are designed to fit a huge range of models including the popular CC999ES, CC99M, SC500E, and many more from the Tru-Cut and Tuff-Cut lines. If you have one of these mowers, this is a straightforward upgrade that can improve cutting performance without breaking the bank.
Who should buy these blades? They are best suited for homeowners and DIYers who mow their own lawns and want a sharp, aggressive cut. The toothed edge is especially good for mulching or bagging because it chops clippings more finely than a standard flat blade. This means less raking and cleaner-looking grass. If you are a contractor mowing multiple yards, having a 3-pack is a smart move you can change blades quickly when one gets dull.
In real-world use, these blades hold up well. They are made from hardened steel that resists bending and stays sharp through several mowing sessions. The dimensions match stock blades exactly length 20-3/4 inches, width 2-1/4 inches, center hole 11/16 inches so installation is a breeze. Just remove the old blade, center the new one on the spindle, and torque it down. No modifications needed.
Build quality is solid for the price. The green powder coating helps resist rust and looks decent. They are not as thick as some premium aftermarket blades but are perfectly adequate for residential use. One downside is that the toothed pattern can sometimes leave a slightly coarser finish if you prefer a perfectly even cut, but for most lawns the difference is negligible. Also, always verify your mower model matches the listed compatibility to avoid a return.
Overall, the 8TEN LawnRAZOR 3-pack delivers dependable performance at a reasonable cost. If you need a set of sharp, durable blades that fit a wide range of MTD-family mowers, this is a smart choice. Keep a spare in your shed and swap them out when you notice the cut quality dropping. It is a simple way to keep your lawn looking its best all season long.
Frequently Asked Questions
Do toothed blades cut better than regular ones?
Not always. Toothed blades excel at gripping wet or thick grass, reducing clumping. Regular blades often provide a cleaner, shearing cut for dry turf. The best choice depends on your specific grass type and mowing conditions.
Can I use a toothed blade for mulching?
Yes, they work well for mulching. The teeth help lift and re-cut clippings into finer pieces. This improves airflow under the deck, which is essential for effective maintenance and cleaning of the cutting area.
Will toothed blades dull faster than smooth edges?
Generally, yes. The serrations are smaller and can wear down quicker on hard surfaces. Smooth edges tend to retain their sharpness longer in sandy or rocky soil. Always check the steel hardness rating to gauge durability.
Does the center hole shape matter for fitment?
Absolutely. A mismatched center hole, like a round hole on a star-shaped spindle, will not fit. You must match the exact shape and diameter to your mower model. Incorrect fitment can cause dangerous vibration and damage the spindle.
How do I know which blade to buy?
Check your mower’s owner’s manual for the OEM part number. Compare the blade length, width, and center hole dimensions. Many steel types are listed in product specs to help you decide.
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