Pro Jewelry 50 Silicone Rubber Stoppers for Use Alone or with Clip Lock Spacer Charm Quantity:50 Pcs Material: Rubber Silicone, Size: Approx: 6mm x 2mm Hole size: 2mm Thickness: 1.8mm Fits: All major Brand Bracelets, such as Pandora, Chamilia, Carlo Biagi, Zable, and other add-a-bead bracelets. Available color in: Black, Clear and Mix of black and Clear