Pulley, Synchronous; 3/4" Bore; 63/64" Belt Width; 5 Millimeter Belt Pitch; 5M-25 Belt Style; 20 Teeth; 21/32" Face Width; Finished Bore; 1-3/8" Flange OD; 1.208" Outside Diameter; 1.253" Pitch Diameter; Keyway; No Minimum Plain Bore