1place of origin:guangdong China(mainland) 2material:brass,copper 3finish:gold-plated brass eye screw 1Place of origin:Guangdong China(mainland)2Material:brass,copper,alloy steel,stainless steel,carbon steel3finish:oil,zinc,black,etc4G.R:4.8,6.8,8.85size:M3-M25 ,or as drawing6 Material Certifcate :SGS7samples are welcome brass eye screw