Synchronous Pulley; 3/8" Belt Width; 1/5" Belt Pitch; XL Belt Style; 15 Teeth; 9/16" Face Width; Rough Bore; 1-3/16" Flange OD; 0.935" OD; 0.955" Pitch Diam; No Keyway; No Bushing; Yes Minimum Plain Bore; 0.31" Max Bore