This is a A-40X32 Sprocket PN: 40X32Main Description As Following : A-40X32 Sprocket P.N: 40X32 Hub Required: XInside Diameter: 2"Outside Diameter: 5.377"Teeth: 32 Crossed From: WSS104032 , , 20004032 , , 20004032 , , 3016-0160 , , 6713-50763 JOHN DAY , 673-S80403200 , , 673S80403200 , 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: 5.377" Teeth: 32