CBR is a type of body jewelry ring where a bead is held in a section of the ring by the rings pressure. A Captive Bead Ring (CBR), a.k.a a Ball Closure Ring (BCR) and a captive ring, is one of the most popular kinds of body jewelry because it can be used in so many ways. It's not easy to come up with a piercing where captive ring cannot be worn. People buy captive rings (BCR, CBR) as: - nipple piercing jewelry - lip piercing jewelry - eyebrow piercing jewelry - nose piercing jewelry and so on, including the private parts piercing.