all kinds of punch,lathe metal parts,use in electrial applicance 1.Application:used in all kinds of electrial applicance,assembly with plastical box2.Material: copper(QSn-1),stainless steel (304BA,301,306..),,iron,Aluminum,Aluminum alloy...3.Surface:tinned,Zn,golded,Silver,black,copper colour,....4.Shape:round,rectangle,abnormity,following buyer's requirement. lathe or punch metal parts