Roller Chain Sprocket; 1-5/8" Bore; 80 Chain; 14 Teeth; 1 Row of Teeth; No Hardened Teeth; 4.981" Outside Diameter; 4.494" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 1" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material