This is a A-PLW6-12 Pulley PN: PLW6-12Main Description As Following : A-PLW6-12 Pulley P.N: PLW6-12 This pulley can be used with either A or B width belts due to its dual groove / taper configuration.Hub Required: WOutside Diameter: 6.5" Crossed From: WSP650W , , 21020065 , , 21020065 , , 2827-44527 JOHN DAY , 673-S85010900 , , 673S85010900 , 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: 6.5"