Product Details: length: 16" to 18" ext: 3" ext clasp: Lobster Claw Metal finish: Stainless Steel 18K Gold product: Lead & Nickel Compliant anti-tarnish: Tarnish Free, Non-Tarnish Real Gold Dipped Necklace Stainless Steel Necklace Hypoallergenic Necklace Tarnish-Free Necklace Non-Tarnish Necklace Water Proof Necklace Water Resistant Necklace Sweatproof Jewelry Fade Resistant Necklace Anti-oxidation