PEPPERLONELY Brand 20PC Mixed Millefiori Glass Lampwork Heart Charm Pendants 20x20mm Quantity: 20PC Size: 20mm x 20mm (3/4 Inchx3/4 Inch) Hole size: 2.3mm x 4.5mm Thickness: 4.5mm Material: Glass+Alloy(Lead and nickel safe)