Sprocket Bore Diameter 7/8 in For Chain Pitch 3/4 in For Number of Strands Single Hub Type One Side Material Steel Maximum Bore Diameter 7/8 in Number of Teeth 14 Outside Diameter 3.74 in Pitch Diameter 3.371 in Bore Type Fixed Chain Number 60 Finish Black Oxide Hub Diameter 2 9/16 in Hub Projection 0.791 in Includes Set Screws Keyway Yes Keyway Depth 3/32 in Keyway Width 3/16 in Length through Bore 1 1/4 in Number of Set Screws 2