This belly ring is made of high-quality titanium, specifically ASTM F136 grade, which ensures durability and safety for your piercing. It features an internally threaded design, making it easy to insert and reducing any discomfort during wear. The opal stone in the belly button ring adds a pop of color and elegance. You can choose from three different lengths, 8mm, 10mm, or 12mm, to find the most comfortable fit for your navel piercing. It's a stylish and comfortable choice for your belly button jewelry collection!