Pro Jewelry (Set of 4) Assorted Safety Clips + 4 Rubber Stoppers Charm Beads Quantity: 4 clips and 4 Clear Silicone Stoppers O-rings Material: Base Metal Fits: Major Brand Bracelets, such as Pandora, Troll, Chamilia, Kay, Carlo Biagi, & Zable Size: 10mm x 8mm x 3.4mm Diameter Clip-on Core (avg)