Pro Jewelry .925 Sterling Silver Round Stopper with Rubber Charm Bead for Snake Chain Charm Bracelets Quantity: 1 Bead Hole size: extend from 2mm to 4mm Fits: All major Brand Bracelets, such as Pandora, Troll, Chamilia, Kay, Carlo Biagi, Zable, and other add-a-bead bracelets.