SIZE NOTE: The model image is an enlarged view. 6mm is a very small hoop, suitable for small to medium-sized ears and professional ear piercing enthusiasts. Inner Diameter: 6mm, 8mm, 10mm, Thickness available: 18ga (1mm), 16ga (1.2mm). MATERIAL: Solid ASTM F-136 Titanium (Grade 23), Plating- PVD over Implant Grade Titanium, Nickel free, Lightweight. Location: Titanium hoop hinged hoop earring safe for tragus, daith, helix, conch, rook,cartilage piercing and nose ring. The innovative hinge mechanism ensures easy insertion, secure closure, and a comfortable fit, hypoallergenic and safe for sensitive skin. This titanium clicker huggie stack earring make a great gift for nose ring and ear piercing enthusiasts on mother's day, birthdays and valentine's day. 18g/16G Titanium Double Hinge Hoop Hinged Segment Nose Ring Septum Clicker Ring Cartilage Hoop Rook Helix Tragus Earring Hoop