Yeshan 20PCS Silver Plated Lampwork Murano glass Beads Compatible with Most Major Charm Snake chain Bracelets All beads are brand new. Hole size is approximately 4.5 to 5mm. Dimension of beads are approximately 14mm by 9mm. Shape is round disc. Core is not threaded to easily slide onto various european bracelets & necklaces The matetial is Lampwork glass Package including 20 pcs Beads