Medium-Lift Blade / AYP 121798XPack Size:1AYP 121798X, Craftsman 121798X, Husqvarna 532 12 17-98, Viking 6109-004-1006Aladdin US31, Edgewater 156635, Green Line 156195, Green Meadow USSE20, Kwik-Fix 814078, Laser L1649, Laser 91142, NHC EP1013, Oregon 95-027, Prime Line 7-04716, Quality 120927, Rotary 6195, Sunbelt EP-1013, Sunbelt SB-6195, Sunbelt B1EP1013AYP Requires 3 for 50" deck; Viking Requires 3 for 50" deckLength: 17 5/16 ", Center Hole: 3/8 ", Width: 2 1/4 ", Thickness: .187 "