Hinged Nose Rings Hoop: Hypoallergenic g23 titanium, lead and nickel free is more suitable material for very sensitive skin people, the weight of titanium nose ring is 50% less than surgical steel, more comfortable to wear everyday. Seamless Clicker Hoops: The segment rings are polished very well, won't tarnish or turn green even you wear them everyday in the shower or while swimming, they are waterproof, sweatproof, rustresistant and hypoallergenic. Comfortable to wear without sharp edge. Titanium Hoops Rings: Thickness of the piercing: 18 Gauge(1.0mm), inner diameter of the hoop: 10mm. 1pcs sold individually. It can be used as nose rings hoop, septum jewelry septum ring / septum clicker, helix earrings, cartilage earring, rook earrings, lobe earrings hoop and lip rings. Please check the size chart to choose your gauge and diameter hoop for your nose piercing or ear piercing needs. Saves time: These nose rings are easy to open and close the click closure by hand, Not require a tool.And it's still tight after longterm use, needn't to worry about lost when bathing, walking or exercising.