9ct Yellow Trace Necklace Safety Chain. 9ct Yellow Necklet Safety Chain Extender. Length - 68mm (photo is enlarged for illustrative purposes). Jump rings - 3.5mm.Made from solid 9ct gold, not plated. These aren't stamped as they are under the weight threshold and are not a complete item of jewellery. The item "9ct Gold Necklace Necklet Neck Let Extender Safety Chain Bolt & Jump Ring FS31" is in sale since Wednesday, February 27, 2019. This item is in the category "Crafts\Beads & Jewellery Making\Jewellery Findings\Jewellery Clasps & Hooks". The seller is "hswalsh" and is located in Biggin Hill, Kent. This item can be shipped worldwide.