Material: Alloy silver plating, soft and stretchable, easy to return to the original shape after putting the beads in.Quantity: 30pcs (10pcs per size). Size: 14x19mm,20x25mm,25x30mm(including the top loop), 14x14mm,20x20mm,25x25mm(without the top loop). Loop at top is large enough to accomodate most chains, clasp, cord and ribbon.Easy to untangle and stretch, you can separate them easily and then insert wool ball or lava bead by pulling the middle spirals rings apart.Can put crystal, lava beads, woolen balls and other beads into the bead cage, to make necklaces, bracelets, earrings and other unique crafts. Best choice for jewelry DIY.A good gift for birthday party favors, mini treasure toy gifts, halloween and christmas party. Cage pendant fit to make aromatherapy necklaces, bracelets, earrings by putting crystals, stones, gems or beads for yourself, family and friends.