Roller Chain Sprocket; 1-1/4" Bore; 60 Chain; 10 Teeth; 1 Row of Teeth; No Hardened Teeth; 2.759" Outside Diameter; 2.427" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 3/4" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material