80pcs Rubber Stopper Rings, Fit For Snake Chain charm chains, Chamilia, Carlo Biagi, Zable, and other add-a-bead bracelets. | Great Material: Made of soft silicon rubber, heat stability, elastic, anti-aging, fadeless, smellless, nontoxic and eco-friendly. | Size: Outer Dia: 6mm; Hole Size: 2mm; Thickness: 2mm.Fits to main brands bracelets(Dia 3~5mm).