The Teak wood balls have a steel threaded insert for strength. With a smooth matt finish, the balls are a great change from other options. Please note that as they are wood, they should not be exposed to prolonged moisture as they will suffer. Not suitable for the mouth and please keep from unhealed piercings. As they are a natural product, they are all unique and may vary. Also available as barbells, industrial bars and belly bars in steel, black steel, zircon steel and rose gold steel. Ball(s) only.