This gold plated curb (or cuban) chain necklace is 9 mm wide and is available in 18 inch, 20 inch, 22 inch, 24 inch, 30 inch, and 36 inch. This high polished item has a lobster clasp and comes with a manufacturer's lifetime warranty. If there are ever any issues as long as the item is owned it can be returned to the manufacturer for a brand new necklace for the cost of shipping. A manufacturer's warranty form is included with the item. The chain is marked 18KGL to designate the 18K gold layering.