Sprocket, Bore Diameter 5/8 in, For Chain Pitch 1/2 in, For Number of Strands Single, Hub Type One Side, Material Steel, Maximum Bore Diameter 5/8 in, Number of Teeth 23, Outside Diameter 3.94 in, Pitch Diameter 3.672 in, Bore Type Fixed, Chain Number 40, Finish Black Oxide, Hub Diameter 3 in, Hub Projection 0.716 in, Includes Set Screws, Keyway Yes, Keyway Depth 3/32 in, Keyway Width 3/16 in, Length through Bore 1 in, Number of Set Screws 2. This item has been restricted from sale in the following state (s): []