331 in, Bore Type Fixed, Chain Number 35, Finish Black Oxide, Hub Diameter 1 1/16 in, Hub Projection 0.5 in, Pitch Diameter 1.582 in, Includes Set Screws, Keyway Yes, Keyway Depth 3/32 in, Keyway Width 3/16 in, Length through Bore 3/4 in, Number of Set Screws 2.