8TEN LawnRAZOR Mower Blade for Poulan 20 inch Craftsman Husqvarna 850972 145106 532850972 532145106 (Low-Lift) 2 Pack

What It Is

The 8TEN LawnRAZOR is a low-lift mulching blade designed for 20-inch walk-behind mowers from Poulan, Craftsman, and Husqvarna. It’s best suited for dry, short grass where you want fine clippings left on the lawn, not bagged or side-discharged.

Fitment & Compatibility

Before buying, confirm your mower has a 20-inch cutting deck. This blade replaces OEM numbers 850972 and 145106 (also listed as 532850972 and 532145106). It fits most Poulan, Craftsman, and Husqvarna models with those part numbers, but always measure your existing blade: this blade has a 3.25-inch center hole, a 0.5-inch center hole depth, and a 0.187-inch thickness. Check the blade length is exactly 20 inches from tip to tip. If your mower uses a different center hole shape (e.g., star or oval), this won’t fit.

Key Things to Buy

• Quality & material: Made from heat-treated steel with a painted finish; holds an edge decently but will need sharpening more often than premium high-carbon blades.
• Installation: Straightforward—remove the old blade, clean the spindle, and torque the bolt to 30-40 ft-lbs. No special tools beyond a socket wrench and a block of wood to lock the blade.
• Gotcha: Low-lift design means poor performance in tall, wet, or thick grass—it will clog and leave clumps. Not for bagging.
• Pack quantity: Comes as a 2-pack, so you have a spare ready when the first dulls.

Should You Buy It

Buy this if you have a 20-inch Poulan/Craftsman/Husqvarna mower, primarily cut dry, short grass, and want a budget-friendly mulching blade that works fine for regular maintenance. Skip it if you often cut wet, tall, or thick grass—you’ll need a high-lift or gator blade instead.