This is a A-50W14 Sprocket PN: 50W14Main Description As Following : A-50W14 Sprocket P.N: 50W14 Hub Required: WInside Diameter: 1 5/8"Outside Diameter: 3.114"Teeth: 14 Crossed From: WSS105014 , , 20005014 , , 20005014 , , 2827-39427 JOHN DAY , 3016-0185 , , 6713-51563 JOHN DAY , 673-S80501400 , , 673S80501400 , Found in Section & Models : Chains/ Sprockets/ Pulleys/ Hubs > Sprockets, (Miscellaneous) (UNDEFINED): SEVERAL Associated Items : New Also This is An Aftermarket Product And : Hub Required: W Inside Diameter: 1 5/8" Outside Diameter: 3.114" Teeth: 14