Compatible with the following: AYP, Ariens, Cub Cadet, MTD, Troy Bilt, Exmark, Toro, Craftsman, Husqvarna, Poulan, John Deere Used on Deck Sizes 38 Inch, 42 Inch, 46 Inch, 50 Inch, 54 Inch, 60 Inch, 72 Inch A Sharp Mower Blade is Needed to Ensure a Healthier and More Beautiful Lawn Easy Job & Universal Fit: Easily Renew Your Blade in Minutes With Any Power Drill & Hand Drill Blade Sharpener Should Last 15 Blade Sharpens