Roller Chain Sprocket; 1-1/8" Bore; 60 Chain; 13 Teeth; 1 Row of Teeth; No Hardened Teeth; 3.493" Outside Diameter; 3.134" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 3/4" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material