Smooth Glitzy Ball for BCRs. Available in a 4mm ball in 8 colours, Crystal Clear, Crystal AB, Red, Fuchsia, Light Blue, Pink, Turquoise and Sapphire Blue. The balls have 2 recesses as they are held in by tension from the ring. Many different sizes of ring can use this, as long as the gap is for a 4mm ball. (BCR Ring NOT included).