Air Lift Kit / Snapper 7037723BMYPPack Size:1Lesco 050127, Snapper 3-7723, Snapper 7037723, Snapper 60480, Snapper 7060480, Snapper 7037723BMYP, Snapper 7060480SMDealer Choice 50-4725, Edgewater 156902, ESF 111-776, Foley/Belsaw 5977199, Foley/PLP 111-776, Green Meadow AL1728, NHC 212-7622, Oregon 79-728, Prime Line 7-04540, Quality 124003, Rotary 1136, Rotary 15-1136, Sunbelt SB-1136, Sunbelt B1SB1136Snapper 28" and 33" bladesCenter Hole: none, Length: 4 ", Outer Hole: 5/16 ", Includes hardware, Thickness: .134 ", Width: 3 5/8 "