... Carbon steel, Bearing steel, stainless steel,Tungsten Steel, Aluminum,Brass, Plastic and Bakelite2) Equipment:Milling machine, hobbing ... Tolerence:+/-0.02~0.05mmMaterialsstainless steel,alloy steel,aluminum,copper. etcSurface treatmentgalcanizationanodizingsand blastingdull polishPHOSPHATIZINGPOM and otherspackingPoly ... for improving your original design. High quality +/-0.002 precision machining