0.5mm Box Chain 20 Inch 10k White Gold 10KWB040-20, MPN: 10KWB040-20, Polished, Box, Spring Ring, 10K White gold, UPC: 886774539935. Material: Primary - Purity: 10K Length of Item: 20 in Plating: Rhodium Chain Length: 20 in Chain Type: Box Chain Width: 0.5 mm Clasp /Connector: Spring Ring Feature: Solid Manufacturing Process: Casted Material: Primary: Gold Width of Item: 0.5 mm Product Type: Jewelry Jewelry Type: Necklaces Sold By Unit: Each Necklace Type: Chains Material: Primary - Color: White Manufacturing Process 2: Machine Made Chain Type 2: Pendant