Hi-Lift Blade / AYP 121263XPack Size:1AYP 121263X, AYP 143978, AYP 123431X, AYP 143978X, Craftsman 121263X, Flymo 121263X, Husqvarna 532 12 12-63, Husqvarna 532 14 39-78, Murray 881076YP, Partner 121263X, Poulan Pro 532-121263, Viking 6109-004-1001Aladdin US28, Dealer Choice 50-2550, Edgewater 156660, ESF 114-876, Foley/Belsaw 5979471, Foley/PLP 114-876, Green Line 156105, Green Meadow USSE23, Laser L1671, Laser 91157, Laser 91524, NHC 212-0803, NHC EP1006, Oregon 95-031, Prime Line 7-04973, Rotary 6105, Sunbelt EP-1006, Sunbelt SB-6105, Sunbelt B1EP1006AYP Requires 2 for 38" deck; Poulan Pro Requires 2 for 38" deck; Viking Requires 2 for 38" deckLength: 19 1/4 ", Center Hole: 3/8 ", Outer Hole: 3/8 ", Center To Center: 10 ", Width: 2 1/4 ", Thickness: .187 "