Roller Chain Sprocket; 6-1/4" Bore; 140-2 Chain; 60 Teeth; 2 Row of Teeth; Hardened Teeth; 34.442" Outside Diameter; 33.437" Pitch Diameter; C-Hub Both Sides; Finished Bore Mount; No Bushing; 1-3/4" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material