This is a A-PLW6 Pulley PN: PLW6Main Description As Following : A-PLW6 Pulley P.N: PLW6 This pulley can be used with either A or B width belts due to its dual groove / taper configuration.Hub Required: WOutside Diameter: 6" Crossed From: WSP600W , , 21020060 , , 21020060 , , 2827-44427 JOHN DAY , 673-S85010800 , , 673S85010800 , 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: W Outside Diameter: 6"