Clicker Hoop or clickers as they are sometime known.
They look great as lip rings, or in nipple, belly and ear piercings!
This ring is 316L Surgical Steel Clicker Hoops are available in 0.8mm, 1.0mm, 1.2mm and 1.6mm thickness.
Internal diameter available in 6mm, 8mm, 9mm, 10mm. 12mm