This Black PVD Captive Bead Ring is sold individually, but for a pair mark the QTY as 2. Constructed with black pvd on 316L stainless steel, it comes in size 18G, 16G, or 14G. The inner diameter size is dependent on the gauge size. 18G and 16G are 5/16" (8mm) and 14G is 7/16" (11mm). The bead size is 3mm, featuring a synthetic black opalite. Great option to add to your septum, cartilage or daith jewelry collection! For healed piercings.