Bushed Roller Chain Sprocket For Bushing Size 2517 For Bushing Type Split Taper For Chain Pitch 1 1/4 in Material Steel Number of Teeth 15 Outside Diameter 6.631 in Pitch Diameter 6.012 in Chain Number 100 For Number of Strands Single Maximum Bore Diameter 2 1/2 in Finish Black Oxide Hub Diameter 4 1/4 in Hub Projection 1.058 in Hub Type One Side Length through Bore 1 3/4 in Standards ANSI B29.1 BIS Teeth Heat Treatment Hardened Teeth Tooth Width 0.692 in