Product Information Product Type: Seamless Ring in 316L Surgical Stainless Steel Suitable for: Cartilage, Tragus, Rook, Orbital, Conch, Daith, Lobe, Septum, Nipple Piercings & more ! Gauge Size: 16 Gauge (1.2mm) Diameter: 10mm tragus ring hoop opal earring helix cartilage rook daith pinna conch