Single Strand Sprocket, Bore Diameter 1/2 in, For Chain Pitch 1/2 in, For Number of Strands Single, Hub Type One Side, Material Steel, Maximum Bore Diameter 1/2 in, Number of Teeth 9, Outside Diameter 1.67 in, Pitch Diameter 1.462 in, Bore Type Fixed, Chain Number 41, Finish Black Oxide, For Pitch Type Single Pitch, Hub Diameter 1 1/8 in, Hub Projection 0.648 in, Includes Set Screws, Keyway No, Keyway Depth Not Applicable, Keyway Width Not Applicable, Length through Bore 7/8 in