Model is shown wearing 10mm inner diameter hoops _ [ Options ] Inner Diameter: 5/16″ (8 mm), 3/8″ (10mm) sizes _ [ Materials ] 316l surgical steel, Stainless Steel _ [ Measurement ] Bar Thickness: 18 Gauge(1mm) Cone: (0.31″x0.24″) 8x6mm, (0.47″x0.24″) 12x6mm _ *Each item is priced for individual sale.* __