Our Double Flare Nose Bones have a small flat flare on one side and a smaller ball flare on the other. Ball measures about 0.4mm larger than gauge. For fully healed piercings only. Most commonly used in the nostril. Please be sure you can wear a double flare plug before purchasing. Jewelry of this size is fragile. Caution must be taken when wearing small gauge glass. It can break when a force is exerted on it. DO NOT wear during athletic or other physical activity.