This is a A-60X60 Sprocket PN: 60X60Main Description As Following : A-60X60 Sprocket P.N: 60X60 Hub Required: XInside Diameter: 2"Outside Diameter: 14.761"Teeth: 60 Crossed From: WSS106060 , , 3016-0265 , , 6713-55263 JOHN DAY , 971-20006060 , , 97120006060 , Found in Section & Models : Chains/ Sprockets/ Pulleys/ Hubs > Sprockets, (Miscellaneous) (UNDEFINED): SEVERAL Associated Items : New Also This is An Aftermarket Product And : Hub Required: X Inside Diameter: 2" Outside Diameter: 14.761" Teeth: 60