Roller Chain Sprocket Bore Diameter 2 in For Chain Pitch 1 1/4 in For Number of Strands Single Hub Type One Side Material Steel Maximum Bore Diameter 2 in Number of Teeth 14 Outside Diameter 6.23 in Pitch Diameter 5.618 in Bore Type Fixed Chain Number 100 Finish Black Oxide Hub Diameter 4 3/16 in Hub Projection 0.933 in Includes Set Screws Keyway Yes Keyway Width 1/2 in Length through Bore 1 5/8 in Number of Set Screws 2