Bushed Roller Chain Sprocket For Bushing Size E For Bushing Type Quick Detachable For Chain Pitch 1 1/2 in Material Steel Number of Teeth 20 Outside Diameter 10.37 in Pitch Diameter 9.589 in Chain Number 120 For Number of Strands Single Maximum Bore Diameter 3 1/2 in Finish Black Oxide Hub Diameter 6 in Hub Projection 0.701 in Hub Type One Side Length through Bore 2 15/16 in Standards ANSI B29.1 BIS Teeth Heat Treatment Hardened Teeth Tooth Width 0.924 in