Roller Chain Sprocket, Bore Diameter 2 7/16 in, For Chain Pitch 1 in, For Number of Strands Single, Hub Type One Side, Material Steel, Maximum Bore Diameter 2 7/16 in, Number of Teeth 22, Outside Diameter 7.56 in, Pitch Diameter 7.027 in, Bore Type Fixed, Chain Number 80, Finish Black Oxide, Hub Diameter 4 1/4 in, Hub Projection 1.175 in, Includes Set Screws, Keyway Yes, Keyway Width 5/8 in, Length through Bore 1 3/4 in, Number of Set Screws 2