Notched Air-Lift Blade / Bobcat 42180BPack Size:1Bobcat 42180B, Bobcat 112111-03, Bobcat WM142180B, Bobcat 72039B, Bobcat 112243-03, Bobcat 2722543-03, Giant Vac 0788, Husqvarna 539 10 17-33, Kees 101733, Lastec P-128, Snapper 1-7081, Snapper 1520842, Snapper 5020842, Snapper 7017081, Snapper 7075770, Snapper 7075770YPAladdin UBC7, Aladdin UGAT7, Dealer Choice 50-3080, Dealer Choice 50-3085, Dealer Choice 50-3055, Edgewater 150650, ESF 114-146, Foley/PLP 114-146, Green Line 34169, Green Meadow UBOB8, J. Thomas BO-21A, Laser L1501, Laser 91040, Laser 91008, Landscaper Express 22111, Landscaper Express 20-0568, Landscaper Express 2218, Landscaper Express 3231721, Landscaper Express 231036, Landscaper Pro 2218, Mow More BC21A, NHC BC1203, Oregon 93-008, Prime Line 7-04411, Quality 120201, Rotary 2174, Rotary 15-2174, Rotary 1036, Rotary 10174, Rotary 13017, Rotary 6272, Sunbelt SB-90921, Sunbelt BC-1203, Sunbelt SB-2174, Sunbelt B1BC1206, Sunbelt B1PD5010Bobcat Requires 3 for 61" deck; Lastec Requires 3 for 61" deck Heavy-duty, Length: 21 ", Center Hole: 5/8 ", Outer Hole: 1/4 ", Center To Center: 1 5/8 ", Width: 2 1/2 ", Thickness: .250 "