Roller Chain Sprocket Bore Diameter 1 1/2 in For Chain Pitch 1 in For Number of Strands Single Hub Type One Side Material Steel Maximum Bore Diameter 1 1/2 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 3/8 in Length through Bore 1 3/4 in Number of Set Screws 2