... control lathes,polishing machines, milling machines, stamping machines,high-frequency induction quenching machines, etc. 3>Strict and experienced ... QC team inspecting on every working procedure.Use high quality test equipment as hardometer,image survey meter ... Shaft DetailsMaterial:carbon steel,stainless steel,copper, beryllium copper, brass, bronze, OFHC, free-cutting steel, POM,aluminum, PTFE, PEEK ...