1. 10mm Septum Ring / 10mm Hoop Earrings: 12 gauge (thickness: 2mm), inner diameter 10mm ( 25/64 inches ). Please check the inside diameter carefully according to the SIZE CHART OF THE HOOP NOSE RING. Select the most suitable size for yourself. 2. Hoop Nose Rings For Women and Men: 316L surgical steel, polished very well, comfortable to wear without sharp edge. 3. Sold by a pair. It can be used as nose rings hoop, septum jewelry - septum ring / septum clicker, lip rings, helix earrings, cartilage earring, rook earrings, conch piercing earrings, ear lobe earrings hoop. 4. Saves time - easy to open and close the click closure by hand, Not require a tool.And it's still tight after long-term use, needn't to worry about lost when bathing, walking or exercising. 5.You can contact us at any time if you have any questions.