Hi-Lift Blade / Simplicity 1656147ASMPack Size:1Simplicity 1656147, Simplicity 1656147ASM, Simplicity 1656147A, Simplicity 1656147SMAladdin USP5, Aladdin UGAT17, Dealer Choice 50-1815, Edgewater 156810, ESF 114-936, Foley/PLP 114-936, Green Meadow USIM9, Laser L1781, Laser 91236, NHC SP2901, Oregon 91-722, Oregon 96-638, Prime Line 7-04571, Quality 120964, Rotary 2081, Rotary 15-2081, Sunbelt SB-90938, Sunbelt SP-2901, Sunbelt SB-2081, Sunbelt B1SP2901Simplicity 600, 1300, 5000 and 6000 seriesLength: 15 5/16 ", Center Hole: 3/4 ", Outer Hole: 3/8 ", Center To Center: 2 9/16 ", Width: 2 ", Requires 3 for 42" deck, Thickness: .187 "