Specification: 14GA (1.6mm) Thickness, 5/8" (16mm) Length. Flexible internal screw thread, Firmly screw on and conveniently screw off Safe Material: Cute dangle charm nipple rings are made of high quality 316L stainless steel, hypoallergenic, nickel free, lead free, cadmium free and harmless to human This jewelry is your best gift choice to express your love to your wife, mom, sister, friend, or yourself on anniversaries, birthdays, Mother's Day, Christmas, wedding celebrations, New Year's Day, Thanksgiving, or Valentine's Day. If there are any problems with the purchase, please feel free to contact us, we will help to fix the problem Multiple Usages: perfect for nipple and tongue piercing, also can work as cartilage rings, earrings, lip rings and other body parts piercing jewelry, fit for many occasions, such as parties, ceremonies and more