This Gold PVD PolyhedraHearts Titanium Hinged Segment Ring is perfect foryour septum or cartilage piercing!It is sold individually and crafted from gold pvd on ASTM F 136 titanium for superior durability and lasting quality. The inner diameter size is 5/16" (8mm) or 3/8" (10mm), and the hinged segment design allows for easy opening and closing.