Mulching Blade / Exmark 103-6582-SPack Size:1Exmark 103-6582, Exmark 1-303495, Exmark 1-633484, Exmark 103-2518, Exmark 103-6582-S, Exmark 303495, Exmark 1-303527, Exmark 633484, Exmark 103-2508, Exmark 1-303146, Exmark 633482, Exmark 103-2528, Exmark 303283, Exmark 1-633482, Exmark 103-2518-S, Exmark 103-6584-SDealer Choice 50-2145, Dealer Choice 50-2140, Edgewater 152112, Green Line 34406, Green Meadow UGM18, J. Thomas BO-178, Landscaper Express 2213, Landscaper Pro 91218, Mow More EX18E, NHC 212-0386, NHC EM1810, Oregon 91-218, Prime Line 7-06341, Prime Line 7-06477, Rotary 6178, Rotary 15-10719, Rotary 15-6178, Sunbelt SB-6178, Sunbelt B1SB6178, Sunbelt B1EM1860, Sunbelt B1EM1810Exmark Viking and Metro; requires 2 for 36" deck; 3 for 52" deckLength: 18 ", Center Hole: 5/8 ", Width: 2 1/2 ", Thickness: .164 "