Jewelry Monster -Set of 2- "Blue Crystals" Safety Clip Lock + 2 Rubber Stoppers Charm Beads Quantity: 2 Safety Clips + 2 Rubber Stoppers Material: Base Metal + Silicone Rubber Size: 10.5mm Height x 9.3mm Wide x 3.2mm Diameter Clip-on Core Fits Most Major Brands Such As Pandora, Biagi, Chamillia, Zable, Kay Charmed Memories and Troll Chains