Details Chunky curb chain necklace perfect for layering Necklace is 15" long with 3" extender chain (18" total length) Curb chain is 0.29'' (5mm) wide Lobster claw clasp 1 year warranty Packaged in Luv Aj branded gift boxes Materials Made from plated brass Plating is waterproof and tarnish free Plating details: 0.3 microns + e-coating for long lasting durability Plated high polish 14K Gold or Rhodium for maximum shine Necklace is 100% nickel-free and cadmium-free