Mulching Blade / Exmark 103-6393-SPack Size:1Exmark 103-6393, Exmark 103-6393-S, Exmark 103-6398, Exmark 103-6403, Exmark 103-6383, Exmark 103-6403-S, Exmark 103-6383-S, Exmark 103-6398-S, Exmark 116-5174, Exmark 116-5174-SDealer Choice 50-2812, J. Thomas BL-028, J. Thomas 11242, Laser 91868, Landscaper Express 96749, Landscaper Express 36398, Landscaper Express 6393, Landscaper Express 6403, NHC 212-0089, NHC EM1892, Oregon 92-028, Rotary 11242, Rotary 15-11242, Sunbelt B1EM1892Exmark Lazer Z (540,000 and higher); requires3 for 60" deckLength: 20 1/2 ", Center Hole: 15/16 ", Width: 3 ", Thickness: .203 "