Sprocket For Bushing Size Q1 For Bushing Type Split Taper For Chain Pitch 5/8 in Material Steel Number of Teeth 25 Outside Diameter 5.322 in Pitch Diameter 4.987 in Chain Number 50 For Number of Strands Single Finish Black Oxide Hub Diameter 3 7/8 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 Hardened Teeth Tooth Width 0.343 in Width with Bushing 2.499 in