Roller Chain Sprocket; 2-7/16" Bore; 20B-2 Chain; 14 Teeth; 2 Row of Teeth; Hardened Teeth; 6.226" Outside Diameter; 5.617" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 1-1/4" Chain Pitch; ISO Roller Chain; Keyway; Steel Material