Toothed Blade / Exmark 116-5175-SPack Size:1Exmark 103-6397-S, Exmark 103-6382-S, Exmark 103-6392-S, Exmark 103-6402-S, Exmark 103-6397, Exmark 103-6382, Exmark 103-6392, Exmark 103-6402, Exmark 109-6873, Exmark 116-5175-S, Exmark 116-5175, Toro 109-6873J. Thomas BL-751, Landscaper Express 36387, Landscaper Express 96322, Landscaper Express 1036402, Landscaper Express 6392, Landscaper Express 36397, Oregon 96-322, Rotary 11450, Rotary 11451Exmark Turf Tracer (540,000 and higher); Lazer Z (790,000 and higher); and Vantage (850,000 and higher); requires 2 for 36" deck and requires 3 for 52" deckCenter Hole: 15/16 ", Length: 18 ", Not recommended for use with mulch kit, Thickness: .203 ", Width: 2 1/2 "