The classic BCR, also called a clamping ball ring, can be used on a wide variety of body parts. The closure is a ball that is clamped between the opening of the ring. It has two small indentations on both sides so that it can lock into the ring opening. Depending on the size of the ring, it may require special tools (clamping ball pliers) to release the ball before insertion and also to clamp it back in after insertion.
You can use this high-quality yellow gold (18 carat) clip in ring for almost any piercing, it is especially beautiful as septum jewellery or for your Daith piercing in the ear.