The product is a curb chain necklace made of surgical stainless steel, plated with 18kt gold. It is 8mm in wide Plated 18kt stainless will not corrode or tarnish , making it a high-quality and long-lasting piece of jewelry. Made in the USA, this necklace is a stylish and classic accessory for men looking to add a touch of elegance to their outfits. Some are made of stainless ours are made of surgical stainless will never tarnish.