... quality control. 3.11 years OEM manufacturer. Item NO. warm gear shaftsMaterialsIron, aluminum, steel, copper, plastic, carbon steel, nylon, bronze ... , CNC lathe, grinding machine, automatic lathe machine, conventional lathe machine, milling machine, drilling machine, EDM, wire-cutting machine, CNC bending machine etc.Service projectTo provide ... pleasure to be on service of you! warm gear shafts