Finished Bore with Keyway & SS Bore Roller Chain Sprocket, 12B Chain Size, 14 # of Teeth
61 mm, Bore Type Fixed, Chain Number 12B, Finish Black Oxide, Hub Diameter 64 mm, Hub Projection 0.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 14, Outside Diameter 3.8 in, Pitch Diameter 85.