Bushed Roller Chain Sprocket For Bushing Size 2012 For Bushing Type Split Taper For Chain Pitch 5/8 in Material Steel Number of Teeth 30 Outside Diameter 6.321 in Pitch Diameter 5.979 in Chain Number 50-2 For Number of Strands Double Maximum Bore Diameter 2 1/2 in Finish Black Oxide Hub Diameter 5 9/32 in Hub Projection 0.705 in Hub Type One Side Length through Bore 1 3/4 in Standards ANSI B29.1 BIS Teeth Heat Treatment Not Hardened Tooth Width 0.332 in