1/2" Bore; 1 Grooves; 3.15" Outside Diameter; Finished Bore; No Bushing; 3L|4L|A|5L|B Belt Series; 1.7" Pitch Dia Min; 3.2" Pitch Dia Max; 11/16" Face Wid Min; 1" Face Wid Max; No Keyway; Manual Turn Adjustment Method