Set Of 3 Lawn Mower Blades Replaces OEM Grasshopper 320236 Grasshopper 320237 Grasshopper 320239 Copperhead Mulching Blade fits Grasshopper. Requires (3) blades to fit a 52" cut. Also fits Woods. C. H. DIA: 1/2" LENGTH: 18" THICKNESS: 0.2040" WIDTH: 2-1/2"