China 1045 carbon steel transmission roller chain sprocket 10b-1 with big bore and screw hole hub wheel sprocket design build

Materials: MetalNormal: ISOModel Quantity: 10b-1 hub wheelTreatment method: Large frequency quenchingSurface area: Black,Oxide,Galvanization or buyer necessityProcessing: CNC lathe, forgingtooth: harden toothbore: method or finished borePackaging Particulars: internal...