This is a A-50V09 Sprocket PN: 50V09Main Description As Following : A-50V09 Sprocket P.N: 50V09 Hub Required: VInside Diameter: 1 1/8"Outside Diameter: 2.092"Teeth: 9 Crossed From: 3016-0180 , Found in Section & Models : Tractor Parts Associated Items : New Also This is An Aftermarket Product And : High Quality Afternaket Shipped from Both US and Canada