8mm Septum Ring / 8mm nose hoop ring: 18 gauge (thickness: 1.0mm), inner diameter 8mm ( 5/16 inches ). Please check the inside diameter carefully according to the SIZE CHART OF THE HOOP NOSE RING. Select the most suitable size for yourself. Hinged Nose Rings Hoop: 316L surgical steel, polished very well, comfortable to wear without sharp edge. Sold individually. It can be used as nose rings hoop, septum jewelry - septum ring / septum clicker, lip rings, helix earrings, cartilage earring, rook earrings, cartilage earring ear lobe earrings hoop. 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. FANSING 18k Gold-plated Nose Rings Hoop 18g 8mm Septum Ring 18 Gauge Seamless Hinged Piercing Jewelry for Cartilage Lip Helix