ThisBlue Opalite Teardrop Titanium Captive Ring is made with ASTM F-136 titanium and features a syntheticblue opalite for ashimmering look. Sold individually, this captive ring isgreat for septum, cartilage, or nipple piercings. With a size of 16G and an inner diameter of 5/16" (8mm), it'sgreat for healed piercings.