Handmade glass charm beads with a silver lining. The silver core is solid sterling silver with the core going through the bead, they are not caps. These will fit any of your charm bracelets up to 4 mm. These beads will fit most European brand charm bracelets and bangles including Pandora or Chamilia. It will also fit 3mm snake chain or leather bracelets or necklaces that have a removable clasp.