10K 4.5mm Open Concave Curb Chain 10KProduct Details Material; Primary Purity 10K Finish Polished Length of Item 18 in Chain Length 18 in Chain Type Curb Chain Width 4. 5 mm Clasp Connector Lobster Feature Solid Manufacturing Process Casted Material; Primary Gold Width of Item 4. 5 mm Product Type Jewelry Jewelry Type Necklaces Sold By Unit Each Necklace Type Chain Styles Gender Unisex Profile Type Concave Material; Primary Color Yellow Manufacturing Process 2 Machine Made