Sprocket For Bushing Size SK For Bushing Type Quick Detachable For Chain Pitch 3/4 in Material Steel Number of Teeth 30 Outside Diameter 7.59 in Pitch Diameter 7.175 in Chain Number 60 For Number of Strands Single Maximum Bore Diameter 2 5/8 in Finish Black Oxide For Pitch Type Single Pitch Hub Diameter 3 7/8 in Hub Projection 0.791 in Hub Type One Side Length through Bore 1 1/4 in Material Grade 1045 Minimum Bore Diameter 2 5/8 in Resistance Properties Corrosion Resistant