Small septum nose rings for women: 16 gauge (thickness: 1.2mm), inner diameter 7mm ( 9/32 inches ). Usually, 16 gauge is not for nostril piercing, please confirm what guage your piercing hole is. 16g 7mm surgical steel helix hoop: 316L surgical steel, polished very well, comfortable to wear without sharp edge. Sold individually. It can be used as small septum ring for SMALL nose for only women, helix earring hoop, forward helix earring, rook earrings, daith earrings, tragus earrings hoop, cartilage earring hoop and second or third lobe piercing 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. Size information: 16 gauge (thickness: 1.2mm), inner diameter 7mm ( 9/32 inches ). Material: 316L surgical steel