Bushed Roller Chain Sprocket For Bushing Size 2012 For Bushing Type Split Taper For Chain Pitch 1 1/4 in Material Steel Number of Teeth 13 Outside Diameter 5.821 in Pitch Diameter 5.223 in Chain Number 100 For Number of Strands Single Maximum Bore Diameter 2 in Finish Black Oxide Hub Diameter 3 9/16 in Hub Projection 0.558 in Hub Type One Side Length through Bore 1 1/4 in Standards ANSI B29.1 BIS Teeth Heat Treatment Hardened Teeth Tooth Width 0.692 in