Finished Bore with Keyway & SS Bore Sprocket, 50 Chain Size, 1-1/8 Bore Dia., 13 # of Teeth, Tritan, Mfr#: 50BS13H X 1 1/8

Sprocket, Bore Diameter 1 1/8 in, For Chain Pitch 5/8 in, For Number of Strands Single, Hub Type One Side, Material Steel, Maximum Bore Diameter 1 1/8 in, Number of Teeth 13, Outside Diameter 2.91 in, Pitch Diameter 2.612 in, Bore Type Fixed, Chain Number 50, Finish Black Oxide, Hub Diameter 1 7/8 in, Hub Projection 0.657 in, Includes Set Screws, Keyway Yes, Keyway Depth 1/8 in, Keyway Width 1/4 in, Length through Bore 1 in, Number of Set Screws 2