This is a A-60X26 Sprocket PN: 60X26Main Description As Following : A-60X26 Sprocket P.N: 60X26 Hub Required: XInside Diameter: 2"Outside Diameter: 6.627"Teeth: 26 Crossed From: WSS106026 , , 20006026 , , 20006026 , , 2827-42427 JOHN DAY , 3016-0242 , , 6713-54363 JOHN DAY , 673-S80602600 , , 673S80602600 , 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: 6.627" Teeth: 26