Roller Chain Sprocket; 1-7/16" Bore; 60 Chain; 20 Teeth; 1 Row of Teeth; No Hardened Teeth; 5.186" Outside Diameter; 4.794" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 3/4" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material