Bushed Roller Chain Sprocket For Bushing Size SH For Bushing Type Quick Detachable For Chain Pitch 5/8 in Material Steel Number of Teeth 18 Outside Diameter 3.92 in Pitch Diameter 3.599 in Chain Number 50 For Number of Strands Single Maximum Bore Diameter 1 11/16 in Finish Black Oxide Hub Diameter 2 7/8 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