8TEN LawnRAZOR mower blade replacement 18 5/8 in 3-pack — medium-lift, direct-fit for Craftsman & John Deere

If your mower needs dependable cutting performance, these 8TEN LawnRAZOR blades are engineered as direct-fit replacements for a range of John Deere and compatible models. Built to match OEM mounting and geometry, they restore factory cutting height and airflow for an even, consistent discharge. Each blade is finished to resist corrosion and maintain a sharp edge season after season.

Which machines will these blades fit?

These blades are designed to replace specific OEM part numbers and fit a variety of John Deere and Craftsman models that share the same blade mounting and dimensions. Confirm your mower uses a 7-point star center hole and an 18 5/8" blade length before ordering.

• Compatible with John Deere OEM numbers GX21380 and GY20679.
• Also fits John Deere GY20684 and GY20686 configurations.
• Works on models including John Deere D170, G110, 190C, and LA150 when specs match.
• Blade dimensions: 18 5/8" length, 0.197" thickness, 2 5/8" width, 7-point star center hole.

How do these blades affect cutting and bagging?

The medium-lift profile balances grass lift and airflow to deliver a cleaner cut and efficient discharge without excessive power draw. They’re ideal when you need a mix of side-discharge performance and reasonable bagging or mulching capability on mid-sized decks.

• Medium-lift design improves grass lift for uniform cutting.
• Optimized airflow helps consistent bagging and side discharge.
• Maintains factory deck height and cutting line for even results.
• Durable edge holds shape to reduce scalloped mowing patterns.

What are the blade specifications and mounting details?

These blades match OEM mounting geometry so installation uses your mower’s original hardware and torque settings. Exact measurements matter for fit and function; compare these specs to your current blade before purchase.

• Overall length: 18 5/8" (measured tip-to-tip).
• Thickness: 0.197" for strength and reduced flex.
• Width: 2 5/8"—designed for standard deck clearance.
• Center hole: 7-point star pattern to match specified spindles.

How easy is installation and what should I check during replacement?

Replacing these blades is straightforward with basic hand tools, but observe safety and alignment details to protect the deck and ensure smooth cutting. Inspect spindles, hardware, and deck clearance while changing blades to avoid future issues.

• Use proper socket/wrench and torque to secure blades per mower manual.
• Check spindle and mounting hardware for wear or damage before fitting.
• Ensure cutting edges face the correct mowing direction when mounted.
• Verify blade clearance from deck and remove any debris from spindle area.

Who is this for: Homeowners and lawn care enthusiasts with John Deere or compatible mid-sized riding mowers who need a reliable, OEM-dimension replacement blade. If your machine uses the specified 7-point star center hole and 18 5/8" length, this 3-pack provides spare blades for seasonal changes, faster re-sharpen cycles, or multiple machines. Choose 8TEN LawnRAZOR blades when you want consistent cut quality, easier bagging, and parts that match factory fit and function without the wait for custom fabrication.