1.25mm 14k Yellow Gold Solid Singapore Chain Necklace Extender Safety Chain Singapore Chain is 1.25 Millimeters Wide Finished with a Spring Ring Clasp; Crafted in Polished 14k Yellow Gold Inside Dimension of Spring Ring Clasp is 1.40 Millimeters (Check the Measurement of What this will be Hooking Onto) Solid Singapore Chain is 2.25 Inches Long Used as an Attachment to Lengthen Chains and Necklaces or as a Safety Chain for Watches and Bracelets Made to Order Especially for You, Hand-Finished in Approx. 11 Business Days; Happily Made in America