This is a high quality, substantial 4.2mm 18k solid gold curb chain necklace, available in your choice of 18″, 20″ or 24″ inch lengths, perfectly suitable for men (also available in custom sizes by request). Includes the jewelry industry’s best lobster claw clasp closure for a easy to use, comfortable and secure fit. Gold weight of the chain varies based on length and is approx: 18 inches – 24.48 grams 20 inches – 27.20 grams 24 inches – 32.64 grams Every chain includes the 18k stamp hallmark to guarantee authenticity and metal purity. Our 18k gold curb chains are more comfortable and have a superior design because unlike sharper beveled curb chain designs, ours are slightly rounded on the edges for a more smooth finish and comfortable wear. This jewelry item is made in the U.S.A.!