500 Stop Beads Inserts Silicone Rubber Donut Spacers Fits European Charm Bracelets Clip Over Stoppers Wholesale Jewelers’ Pack * Beads are 6mm round silicone Donuts with a 2.9mm stretchable hole * We have tryed them on Troll, Pandora, Dione and 2 different Knock of chains * These are ment to use under a clip over stop bead