Sprocket For Bushing Size Q1 For Bushing Type Split Taper For Chain Pitch 5/8 in Material Steel Number of Teeth 54 Outside Diameter 11.106 in Pitch Diameter 10.749 in Chain Number 50 For Number of Strands Single Finish Black Oxide Hub Diameter 4 1/2 in Hub Projection 1.407 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 0.343 in Width with Bushing 2.499 in