This is a A-125-824 Slip Clutch Disc (Modern Ag Parts) PN: 125-824Main Description As Following : A-125-824 Slip Clutch Disc (Modern Ag Parts) P.N: 125-824 Inside Diameter: 4-1/2" (114.3 mm)Outside Diameter: 6-1/2" (165 mm)Thickness: 0.124" Stocked As: A-W39301 Found in Section & Models : Tractor Parts Associated Items : New Also This is An Aftermarket Product And : Inside Diameter: 4-1/2" (114.3 mm) Outside Diameter: 6-1/2" (165 mm) Thickness: 0.124"