Souarts Mixed Random European Spacer Beads with Clear Rhinestone for Charm Bracelets Pack of 10pcs MATERIAL:zinc alloy and rhinestone. SIZE :10mm (3/8") Dia.; hole size: 5.4mm (2/8"); thickness: 5.5mm (2/8") Solid and Durable Design, Don't worry about the charm breaking or coming off Perfect size for most of bracelets and necklace Avoid getting any sensitivity or allergy issues when wearing the charms