18k Gold Filled Unisex Curb Chain Necklace 5mm- If you would like a thicker size please note our other listings. 100% hypoallergenic, Nickel and Lead Free. Tarnish Resistant, Waterproof Material : 18K Gold filled Closure : Lobster Claw Measurement :5mm Thickness- other options available under different listings. Necklace Length: Options Available. - Fast Shipping - orders ship in 1-2 business days - Satisfaction Guarantee, Returns Accepted - Please ask for larger quantities if would like more than what is currently listed! - For international customers: Import duties, taxes, and charges are not included in the item price or shipping cost.