1.Precision special stud & cnc part 2.Good quality at competitive price! 3.Accord ... kinds of precision hardware part,plastic & mould. Such as precision metal turned parts,rivet,screw & nut,pin,shaft,terminal etc; which ... , auto industries. They are made of iron, Stainless steel, copper, aluminium, alloy steel and meet the ROHS and the ISO Certification. precision metal stud