Finished Bore with Keyway & SS Bore Roller Chain Sprocket, 12B Chain Size, 19 # of Teeth, Tritan, Mfr#: 12BS19H X 30

Roller Chain Sprocket, Bore Diameter 30 mm, For Chain Pitch 3/4 in, For Number of Strands Single, Hub Type One Side, Material Steel, Maximum Bore Diameter 30 mm, Number of Teeth 19, Outside Diameter 5 in, Pitch Diameter 115.74 mm, Bore Type Fixed, Chain Number 12B, Finish Black Oxide, Hub Diameter 90 mm, Hub Projection 0.94 in, Includes Set Screws, Keyway Yes, Keyway Width 8 mm, Length through Bore 35 mm, Number of Set Screws 2