This is a A-50X41 SPROCKET 50X41 PN: 50X41Main Description As Following : A-50X41 SPROCKET 50X41 P.N: 50X41 Dim D (4): XInside Diameter: 2"Outside Diameter: 8.715"Teeth: 41 Crossed From: 3016-0212 , Found in Section & Models : Tractor Parts Associated Items : New Also This is An Aftermarket Product And : Hub Required: X Inside Diameter: 2" Outside Diameter: 8.715" Teeth: 41