This is a A-PLV3 Pulley PN: PLV3Main Description As Following : A-PLV3 Pulley P.N: PLV3 This pulley can be used with either A or B width belts due to its dual groove / taper configuration.Hub Required: VOutside Diameter: 3" Crossed From: WSP300V , , 21010030 , , 21010030 , , 2827-43827 JOHN DAY , 971-21010030 , Found in Section & Models : Chains/ Sprockets/ Pulleys/ Hubs > Pulleys, (Miscellaneous) (UNDEFINED): SEVERAL Associated Items : New Also This is An Aftermarket Product And : This pulley can be used with either A or B width belts due to its dual groove / taper configuration. Hub Required: V Outside Diameter: 3"