Bushed Roller Chain Sprocket For Bushing Size 1615 For Bushing Type Split Taper For Chain Pitch 1 in Material Steel Number of Teeth 12 Outside Diameter 4.332 in Pitch Diameter 3.864 in Chain Number 80 For Number of Strands Single Maximum Bore Diameter 1 5/8 in Finish Black Oxide Hub Diameter 3 in Hub Projection 0.925 in Hub Type One Side Length through Bore 1 1/2 in Standards ANSI B29.1 BIS Teeth Heat Treatment Hardened Teeth Tooth Width 0.575 in