Product Details18 Gauge 5/16 ASTM F-136 Titainum Percision Hinged Segment Hoop If you are in need of a simple, yet classically fashionable addition to your style, this 18 gauge cartilage ring is just the solution. It is made with a 6mm ASTM F-136 implant grade titanium hinged circular ring. It features simple, elegant design. It also features a non-removable, hinged segment that makes insertion and removal a breeze and you can rock it in multiple piercings such as conch, daith, and ear lobe. Get simple style you will love with this elegantly unadorned nose piercing jewelry.Specifications18 Gauge (1.0mm) 5/16" (8mm), Precision Hinged Closure, ASTM F-136 Implant Grade Titanium