Sprocket Bore Diameter 3/8 in For Chain Pitch 3/8 in For Number of Strands Single Hub Type One Side Material Steel Maximum Bore Diameter 9/16 in Number of Teeth 10 Outside Diameter 1.38 in Pitch Diameter 1.214 in Bore Type Plain Chain Number 35 Finish Black Oxide Hub Diameter 1 in Hub Projection 0.582 in Keyway No Keyway Depth Not Applicable Keyway Width Not Applicable Length through Bore 3/4 in Number of Set Screws 0 Set Screw Location Not Applicable