Captive Bead Rings, shortened as CBRs,are one of the most versatile pieces of jewelry used in body piercings. Simply put, they are just round hoops that can go in virtually any type of piercing you can imagine. Horseshoes, or circular barbells, are bent into the shape of a U, which is why they were dubbed horseshoes. Twists, like the name suggest, are uniquely bent into the shape of a Z with two beads screwed onto either end. Both are popular styles of body jewelry that enable the wearer to get creative with their piercings.