Roller Chain Sprocket; 3-15/16" Bore; 160-2 Chain; 54 Teeth; 2 Row of Teeth; No Hardened Teeth; 35.54" Outside Diameter; 34.397" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 2" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material