Roller Chain Sprocket; 1-15/16" Bore; 80 Chain; 24 Teeth; 1 Row of Teeth; No Hardened Teeth; 8.196" Outside Diameter; 7.661" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 1" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material