- Unisex Brand New Chain! Chain Metal: 925 Sterling Silver. Chain Tickness: Approximately 1.0mm. Chain shape: Round. Chain Style: Snake chain Chain length: 16" in length. Chain stamped: 925. Hypoallergenic/Lead free/Nickel free. Study and perfect for pendants. New without tags. Also available in 18", 20" and 22" length, view listing. 💕Bundle and save💕 Thanks for stopping by!