producted by Automatic Lathe,material :brass,stud nut and bolts,can produce with your remands precision parts 1) Material: different kinds of stainless steel, iron, copper or aluminum etc2) Main equipment: CNC lathe, automatic lathe, hand lathe grinder, thread rollingmachine, tapping drilling machine etc3)Advanced measuring & testing equipment: projecting apparatus, roughness tester,hardness ...