Hi-Lift Blade / Simplicity 1656144ASMPack Size:1Allis Chalmers 1656144, Simplicity 1656144, Simplicity 2025856, Simplicity 108298, Simplicity 1656144ASM, Simplicity 1656144A, Simplicity 108298SM, Simplicity 1656144SM, Simplicity 2025856SMAladdin USP4, Aladdin UGAT39, Dealer Choice 50-1695, Dealer Choice 50-1600, Edgewater 156815, ESF 114-946, Foley/PLP 114-946, Green Meadow USIM11, Laser L1783, Laser 91238, NHC 212-0947, Oregon 91-712, Prime Line 7-04430, Quality 120962, Rotary 2083, Rotary 15-2083, Sunbelt SB-2083, Sunbelt B1SB2083, Sunbelt B1SB1118Simplicity GTH-L, 700, 900 and 7000 series (new style); requires 3 for 42" deckLength: 14 1/2 ", Center Hole: 3/4 ", Outer Hole: 3/8 ", Center To Center: 3 1/16 ", Width: 2 ", Left hand blade, Thickness: .187 "