1. 10mm Septum Ring / 10mm Hoop Earring: 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. 10mm septum clicker for women and men: 316L surgical steel, polished very well, comfortable to wear without sharp edge. 3. Sold individually. It can be used as septum jewelry - septum ring / septum clicker,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. If you have any questions, please feel free to contact us.