Hi-Lift Blade / Simplicity 1704101ASMPack Size:1Simplicity 1704101, Simplicity 1704101ASM, Simplicity 1704101SM, Simplicity 1704101AAladdin USP26, Dealer Choice 50-4677, Green Meadow 91-701, NHC 212-0068, Oregon 91-701, Oregon 96-654, Rotary 10096, Rotary 15-10096, Sunbelt SB-90954, Sunbelt SB-91709, Sunbelt B1SP2903Simplicity LTH and 1600 series; requires 1 of 345-102 and 1 of 345-106 for 38" deckLength: 22 1/4 ", Center Hole: 3/4 ", Outer Hole: 3/8 ", Center To Center: 2 9/16 ", Width: 2 ", Requires 1 of 345-106 and 1 of 345-102 for 38" cut, Thickness: .203 "