Made of murano style lampwork glass, these beads will fit all Pandora, Biagi, Chamilia, Troll and other similar style master bracelets. Simply slide them on as you would any other unthreaded bead. Solid single core of bead measures approx 4.5mm and is rhodium plated for long-lasting wear. Bead itself measures 14mm (9/16") in diameter and 10mm (approx 3/8") wide.. Affordable enough to add many new beads to your own bracelet or create one for a special friend.