Seamless Gold Plated Nose Ring Hoop: Gauge size: 16G(1.2mm); Inner diameter: 8mm(0.31 inches); Material: 316L stainless steel; One order includes 3 piece of hinged segment ring, comes in various styles to meet your fashion needs: sparkly CZ nose hoop, double hoop nose ring, dainty single septum hoop; We've provided the size comparison chart for you reference