Sprocket For Bushing Size SH For Bushing Type Quick Detachable For Chain Pitch 5/8 in Material Steel Number of Teeth 18 Outside Diameter 3.92 in Pitch Diameter 3.599 in Chain Number 50 For Number of Strands Single Maximum Bore Diameter 1 5/8 in Finish Black Oxide For Pitch Type Single Pitch Hub Diameter 2 11/16 in Hub Projection 0.47 in Hub Type One Side Length through Bore 13/16 in Material Grade 1045 Minimum Bore Diameter 1 11/16 in Resistance Properties Corrosion Resistant