... : ss,cu,steel, POM, Nylon)2.Finish: Plain, zinc/nickel plated, tin plated and so on.3.Tolerance: ±0.014.Process: automatic lathing ... ,6063 Etc.) , steel, etc. 4) Finish: Anodized, Polishing, zinc plated , nickel plated , Chrome ,etc. 5) Diameter size: From 0.5mm to 500mm ...