Sprocket, For Bushing Size SH, For Bushing Type Quick Detachable, For Chain Pitch 1/2 in, Material Steel, Number of Teeth 20, Outside Diameter 3.46 in, Pitch Diameter 3.196 in, Chain Number 40, For Number of Strands Single, Maximum Bore Diameter 1 5/8 in, Finish Black Oxide, Hub Diameter 2 11/16 in, Hub Projection 0.529 in, Hub Type One Side, Length through Bore 13/16 in, Standards ANSI B29.1, BIS, Teeth Heat Treatment Hardened Teeth, Tooth Width 0.284 in, Width Across Tooth Sets Not Applicable