Sprocket Bore Diameter 1 in For Chain Pitch 3/4 in For Number of Strands Single Hub Type One Side Material Steel Maximum Bore Diameter 2 3/4 in Number of Teeth 24 Outside Diameter 6.15 in Pitch Diameter 5.746 in Bore Type Plain Chain Number 60 Finish Black Oxide Hub Diameter 4 in Hub Projection 0.791 in Keyway No Keyway Depth Not Applicable Keyway Width Not Applicable Length through Bore 1 1/4 in Number of Set Screws 0 Set Screw Location Not Applicable