Roller Chain Sprocket Bore Diameter 3/4 in For Chain Pitch 5/8 in For Number of Strands Double Hub Type One Side Material Steel Maximum Bore Diameter 2 3/4 in Number of Teeth 36 Outside Diameter 7.52 in Pitch Diameter 7.171 in Bore Type Plain Chain Number 50-2 Finish Black Oxide Hub Diameter 3 1/4 in Hub Projection 0.83 in Keyway No Keyway Depth Not Applicable Keyway Width Not Applicable Length through Bore 2 1/8 in Number of Set Screws 0 Set Screw Location Not Applicable