Sprocket, For Bushing Size JA, For Bushing Type Quick Detachable, For Chain Pitch 3/4 in, Material Steel, Number of Teeth 12, Outside Diameter 3.25 in, Pitch Diameter 2.898 in, Chain Number 60, For Number of Strands Single, Maximum Bore Diameter 1 1/4 in, Finish Black Oxide, For Pitch Type Single Pitch, Hub Diameter 2 1/16 in, Hub Projection 0.166 in, Hub Type One Side, Length through Bore 9/16 in, Material Grade 1045, Minimum Bore Diameter 1 1/4 in, Resistance Properties