Notched Hi-Lift Blade / Exmark 103-6403-SPack Size:1Exmark 103-6403, Exmark 103-6403-S, Exmark 103-6398, Exmark 103-6393, Exmark 103-6383, Exmark 103-6393-S, Exmark 103-6383-SDealer Choice 50-2813, J. Thomas 103-6403, Laser 91862, Landscaper Express 96749, Landscaper Express 36398, Landscaper Express 6393, Landscaper Express 6403, NHC 212-0100, Oregon 92-031, Rotary 11248, Rotary 11224, Rotary 15-11224, Sunbelt B1SB11248Exmark Lazer Z (540,000 and higher) and Ultra Cut; requires 3 for 60" deckLength: 20 1/2 ", Center Hole: 15/16 ", Width: 2 1/2 ", Thickness: .203 "