Sprocket For Bushing Size 2012 For Bushing Type Taper Lock For Chain Pitch 3/4 in Material Steel Number of Teeth 20 Outside Diameter 5.185 in Pitch Diameter 4.794 in Chain Number 60 For Number of Strands Single Maximum Bore Diameter 2 in Finish Black Oxide For Pitch Type Single Pitch Hub Diameter 3 5/8 in Hub Projection 0.791 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