Roller Chain Sprocket; 1-1/4" Bore; 40 Chain; 32 Teeth; 1 Row of Teeth; No Hardened Teeth; 5.376" Outside Diameter; 5.101" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 1/2" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material