European Heart with Key Opening Charm Bead Spacer for Snake Chain Charm Bracelet Quantity: 1 Bead Material: Zinc Metal Alloy Size: Hole is 4.5 mm slide on core (not threaded) Fits: All major Brand Bracelets, such as Pandora, Troll, Chamilia, Carlo Biagi, Zable, and other add-a-bead bracelets. European Heart with Key Opening Charm Bead Spacer for Snake Chain Charm Bracelet