Sprocket For Bushing Size SDS For Bushing Type Quick Detachable For Chain Pitch 5/8 in Material Steel Number of Teeth 21 Outside Diameter 4.52 in Pitch Diameter 4.194 in Chain Number 50 For Number of Strands Single Maximum Bore Diameter 2 in Finish Black Oxide Hub Diameter 3 3/16 in Hub Projection 1.157 in Hub Type One Side Length through Bore 1 1/2 in Standards ANSI B29.1 BIS Teeth Heat Treatment Hardened Teeth Tooth Width 0.343 in Width Across Tooth Sets Not Applicable