Sterling Silver Polished and D/C 5.5mm Mariner Link ChainProduct Details Material; Primary Purity 925 Finish Polished Length of Item 18 in Chain Length 18 in Chain Thickness 1. 5 mm Chain Type Open Link Chain Width 5. 75 mm Clasp Connector Lobster Clasp Thickness (Female end) 2. 7 mm Clasp Thickness (Male end) 2. 9 mm Clasp Width (Female end) 5. 8 mm Clasp Width (Male end) 6. 5 mm Coating Anti tarnish Material; Primary Sterling Silver Item Weight U M gm Width of Item 5. 75 mm Product Type Jewelry Jewelry