This 18k gold-plated plated hoop is small: 16 gauge (thickness: 1.2mm), inner diameter 7mm ( 9/32 inches ). Please check the inside diameter carefully. Usually, 16g is not for nostril piercing. For nostril piercing, please go for 18g or 20g. 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, 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. 16g Tragus Hoop 7mm Septum Rings for Women 16 Gauge Cartilage Earrings Hoop 18k Gold-plated Piercing Jewelry for Daith Helix Rook