Bushed Roller Chain Sprocket For Bushing Size 2517 For Bushing Type Split Taper For Chain Pitch 3/4 in Material Steel Number of Teeth 25 Outside Diameter 6.387 in Pitch Diameter 5.984 in Chain Number 60-2 For Number of Strands Double Maximum Bore Diameter 2 1/2 in Finish Black Oxide Hub Diameter 5 5/32 in Hub Projection 2 in Hub Type Both Sides Length through Bore 2 in Standards ANSI B29.1 BIS Teeth Heat Treatment Hardened Teeth Tooth Width 0.444 in