1.04mm 14k Yellow Gold Chain Necklace Extender, Safety Chain, 2.25" Fine Link Cable Chain is 1.04 Millimeters Wide Finished with a Spring Ring Clasp; Crafted in Semi-Polished 14k Yellow Gold Inside Dimension of Spring Ring Clasp is 1.00 Millimeters (Check the Measurement of What this will be Connected to) Extension Safety Cable Chain is 2.25 Inches Long A Safety Chain for Watches and Bracelets and an Attachment to Lengthen Chains and Necklaces Klean Karats Patented Gold Polishing Chamois Included with Order; Proudly Made in America