Venus Hoop Belly Button Rings - Exquisitely designed and aesthetically pleasing to the eye, the Venus Hoop is sold as a complete piece with a curved barbell. The free-moving hoop completely swivels around the barbell, allowing the hoop to always rest comfortably in your navel. This elegantly hand-crafted component slides over any 16g, 14g or 12g bent barbell. Simply remove either ball from your belly button ring and slide on a Venus Hoop. The dangle stems come standard with 4mm semi-precious gem spheres, fiber-optic beads or freshwater pearls. Available for either a 1/4" (~6mm) or 5/16" (~8mm) ball.