Hi-Lift Blade / Simplicity 1704856ASMPack Size:1Simplicity 1704856, Simplicity 1704856ASM, Simplicity 1704856SM, Simplicity 1704856AAladdin USP24, Dealer Choice 50-4678, Green Meadow USIM19, NHC 212-0035, Oregon 91-723, Rotary 10095, Rotary 15-10095, Sunbelt SB-91723, Sunbelt B1SP2902Simplicity LTH and 1600 series; requires 3 for 44" deck; requires 1 of 345-106 and 1 of 345-102 for 38" deckLength: 16 1/8 ", Center Hole: 3/4 ", Outer Hole: 3/8 ", Center To Center: 2 9/16 ", Width: 2 ", Requires 3 for 44" deck; 1 of 345-106 and 1 of 345-102 for 38" deck, Thickness: .203 "