Cymbal Kolympos SuperDuo Silver Plated Bead Ending. Cymbal™ is a unique, imaginative, and groundbreaking metal component line that has been designed to fit and integrate with the most popular bead working beads in the market. BEAD ENDINGS™ serve as clasps or endings to attach clasps. They are shaped and spaced to the specifications of the SuperDuo bead. Sold 2 pieces per pack.