Chain extenders with soldered links can be used to create necklaces and bracelets. Durable stainless steel chain extender will last for years: it will not discolor or oxidize making it especially suitable for wet, humid, tropical environments. There is no plating to wear off, fade or require polishing.
Extender chain, stainless steel, 2.4mm curb with 6.5mm flat round, 2 inches with springring clasp. Sold individually. - Fire Mountain Gems and Beads
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Curb Chain Extenders - Fire Mountain Gems and Beads
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Gold Chain Connector
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Other Vintage & Antique Jewellery, Vintage & Antique Jewellery, Jewellery & Watches - PicClick UK
Curb Chain Extenders - Fire Mountain Gems and Beads
Other Vintage & Antique Jewelry, Vintage & Antique Jewelry, Jewellery & Watches - PicClick CA