Roller Chain Sprocket; 1-1/2" Bore; 80 Chain; 30 Teeth; 1 Row of Teeth; No Hardened Teeth; 10.114" Outside Diameter; 9.567" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 1" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material