18K Gold Plated Stainless Steel 316L Beveled Cuban Links Chains Necklaces Material: 316L Stainless SteelLength:14" to 48"Thickness: 3, 4, 5, 6, 7, 8, 9 and 10mm Stainless Steel 316L (Surgical Steel) features:With its resistance to rust and oxidation, this corrosion-resistant alloy is ideal for long-lasting jewelry designs. This metal is the best suggestion for those living in high-humidity locations, as the metal will keep from rusting much longer than other metals.