This 16G Rainbow Aurora CZ Prong Set Circular Barbell is made of 316L stainless steel and features internally threaded ends for easy insertion and a secure fit. The vibrant rainbow CZ gems add a touch of sparkle. Perfect choice for septum, daith, or cartilage piercings. Sold individually (1pc), with an inner diameter of 5/16" (8mm), this circular barbell is a must-have for any piercing collection.