Sprocket For Bushing Size P1 For Bushing Type Split Taper For Chain Pitch 1/2 in Material Steel Number of Teeth 40 Outside Diameter 6.653 in Pitch Diameter 6.373 in Chain Number 40 For Number of Strands Single Finish Black Oxide Hub Diameter 3 in Hub Projection 1.029 in Hub Type One Side Length through Bore 1 5/16 in Material Grade 1045 Resistance Properties Corrosion Resistant Teeth Heat Treatment Not Hardened Tooth Width 0.284 in Width with Bushing 1.94 in