This traditional 18K Rose Gold Filled herringbone chain necklace has a lobster clasp. It is 19.7 inches long and 5 mm wide. It is shiny, tarnish-free and hypoallergenic. A perfect piece for every situation, every day of the week. *** Free Velvet Gift Pouch Included. We have 16/18/20/22/24 inches in stock for this model.