Hippopotamus Bead Charm 925 Sterling Silver Nickle Free (E4372) Size : Height 11 mm. Width 9 mm. / Hole size: 4.5 - 5 mm Material - genuine 925 sterling silver. Nickel and Lead free. Conform to International, European an American legislation regarding lead, nickel and heavy metal content. Finishing - Oxidized + E-Coat protects the sterling silver from tarnishing for an extended period and lets the natural beauty of the sterling silver come through. Gift box available