1) High prcisoin machine pins. 2) ISO9001, ISO14001, ISO13485 3)100% quality control.. OEM CNC machined ... : Different kinds of stainless steel, steel, brass or aluminum etc. 2) Main equipment: CNC lathe, automatic lathe, grinder, thread rolling machine ... or chrome plating, phosphating etc. 5) Quality assurance in accordance with ISO9001: 2008.6) Tolerance: Can be kept in +/-0.01mm7 ...