2012X9/16 Tapered Locking Bushing 

 9/16" Bore

   Taper-Lock Bushings, Bore Bushing Series 2012, Bolt Circle Dia. 2.63", Length 1.25 In., Steel Material, Includes Cap Screws, For Sheaves, Sprockets, Pulleys, Gearbelt Pulleys, Chain Coupling, and Other Power Transmission Applications, Includes Cap Screws