precision piston/plunger piston/piston part 1 precision dimension 2 high quality 3 nice finish 4 good delivery precision piston/plunger piston/piston part1.Material: carbon steel, stainless steel, brass, Aluminium,etc. 2.Craft:Cutting, CNC, Grinding,blacken.3.Finish:Blacken, Anodizing,Zinc, Nickel, carburizing, heat treatment, polish, etc.4.various size can be available.the parts can be ...