316l Stainless Steel Men Chain Necklace 18K Gold Plated Punk Jewelry Fashion Figaro 12mm bonnie Size: Width:12mm Thickness:3mm Length:55cm(21.5 inch) This necklace is made of copper alloy and yellow gold plated The net weight is 110g for this necklace. it will go with a velvet bag and soft silver polishing cloth keep it away from water,clean it with dry soft cloth for daily care