Single Strand Sprocket, Bore Diameter 5/8 in, For Chain Pitch 3/8 in, For Number of Strands Single, Hub Type One Side, Material Steel, Maximum Bore Diameter 5/8 in, Number of Teeth 19, Outside Diameter 2.47 in, Pitch Diameter 2.279 in, Bore Type Fixed, Chain Number 35, Finish Black Oxide, For Pitch Type Single Pitch, Hub Diameter 1 7/8 in, Hub Projection 0.582 in, Includes Set Screws, Keyway Yes, Keyway Depth 3/32 in, Keyway Width 3/16 in, Length through Bore 3/4 in, Material Grade 1045