This is a A-B1RSM3257 Timber Ridge Rim Sprocket - .325" PN: B1RSM3257Main Description As Following : A-B1RSM3257 Timber Ridge Rim Sprocket - .325" P.N: B1RSM3257 Pitch: .325Spline: SmallTeeth: 7Type: Rim Sprocket Crossed From: 11892 OREGON 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