Sprocket For Bushing Size 2012 For Bushing Type Taper Lock For Chain Pitch 5/8 in Material Steel Number of Teeth 45 Outside Diameter 9.313 in Pitch Diameter 8.96 in Chain Number 50 For Number of Strands Single Maximum Bore Diameter 2 in Finish Black Oxide For Pitch Type Single Pitch Hub Diameter 3 9/16 in Hub Projection 0.907 in Hub Type One Side Length through Bore 1 1/4 in Material Grade 1045 Minimum Bore Diameter 1/2 in Resistance Properties Corrosion Resistant