Sprocket, Bore Diameter 3/4 in, For Chain Pitch 5/8 in, For Number of Strands Single, Hub Type One Side, Material Steel, Maximum Bore Diameter 2 in, Number of Teeth 27, Outside Diameter 5.72 in, Pitch Diameter 5.384 in, Bore Type Plain, Chain Number 50, Finish Black Oxide, For Pitch Type Single Pitch, Hub Diameter 3 in, Hub Projection 0.907 in, Includes Set Screws, Keyway Yes, Keyway Depth 3/32 in, Keyway Width 3/16 in, Length through Bore 1 1/4 in, Material Grade 1045