Sprocket For Bushing Size Q1 For Bushing Type Split Taper For Chain Pitch 3/4 in Material Steel Number of Teeth 45 Outside Diameter 11.175 in Pitch Diameter 10.752 in Chain Number 60 For Number of Strands Single Finish Black Oxide Hub Diameter 4 1/2 in Hub Projection 1.291 in Hub Type One Side Length through Bore 1 3/4 in Material Grade 1045 Resistance Properties Corrosion Resistant Teeth Heat Treatment Not Hardened Tooth Width 0.459 in Width with Bushing 2.49 in