Solid Titanium Hinged Segment Ring - Clear, Black, Gold & Aurora Borealis Available!!! Select desired internal diameter and color from the menu Gauge: 16g - Internal Diameter: 8mm or 10mm Materials: implant grade titanium (6AL-4V-ELI ASTM F-136) - gold & black are PVD over titanium, CZ gems EVERYTHING we sell is brand new, never worn.