Mulching Blade / Exmark 103-6392-SPack Size:1Exmark 103-6392, Exmark 103-6392-S, Exmark 103-6387, Exmark 103-6397, Exmark 103-6402, Exmark 103-6387-SDealer Choice 50-2307, J. Thomas BL-0021, J. Thomas BL-027, Laser 91866, Landscaper Express 36387, Landscaper Express 96322, Landscaper Express 1036402, Landscaper Express 6392, Landscaper Express 36397, NHC EM1891, Oregon 92-027, Rotary 11241, Rotary 11450, Rotary 11451, Sunbelt B1EM1891Exmark Lazer Z (540,000 and higher), Viking and Metro; requires 2 for 36" deck; 3 for 52" deckLength: 18 ", Center Hole: 15/16 ", Width: 2 1/2 ", Thickness: .203 ", Requires 2 for 36" deck; 3 for 52" deck