Notched Hi-Lift Blade / Exmark 103-2531-SPack Size:1Exmark 103-2531, Exmark 1-643006, Exmark 103-2531-S, Exmark 643006, Exmark 1-643097Dealer Choice 50-3445, Green Line 156481, J. Thomas EX-3426, Landscaper Express 201397, Landscaper Express 20-1397, Landscaper Express 20-1415, Mow More EX6481, NHC EM1850, Oregon 91-374, Prime Line 7-06787, Rotary 6481, Sunbelt EM-1850, Sunbelt SB-6481, Sunbelt B1EM1850Exmark Lazer Z; Requires 3 for 72" deckLength: 24 3/8 ", Center Hole: 5/8 ", Width: 3 ", Thickness: .203 "