This is a A-PLW16 Pulley PN: PLW16Main Description As Following : A-PLW16 Pulley P.N: PLW16 This pulley can be used with either A or B width belts due to its dual groove / taper configuration.Hub Required: WOutside Diameter: 16" Crossed From: WSP1600W , , 21020160 , , 21020160 , , 2827-45327 JOHN DAY , 673-S85011700 , , 673S85011700 , 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: 16"