Bushed Roller Chain Sprocket For Bushing Size 2012 For Bushing Type Split Taper For Chain Pitch 5/8 in Material Steel Number of Teeth 48 Outside Diameter 9.91 in Pitch Diameter 9.556 in Chain Number 50 For Number of Strands Single Maximum Bore Diameter 2 in Finish Black Oxide Hub Diameter 3 5/8 in Hub Projection 0.907 in Hub Type One Side Length through Bore 1 1/4 in Standards ANSI B29.1 BIS Teeth Heat Treatment Not Hardened Tooth Width 0.343 in