This classic 18K yellow gold filled cable chain necklace is 24 inches long and fastens with a lobster clasp. The chain is approximately 1mm wide. This necklace is tarnish-resistant and hypoallergenic. It does not flake off, tarnish or discolor. *** Free Velvet Gift Pouch Included. We have 1mm/2mm/2.4mm wide in stock for this model. .