Housweety 10 Silver Tone Butterfly Charm Pendants 48x36mm Zinc metal alloy(Lead and nickel safe)size:48mm x 36mmhole:7x8mmThickness:3mm It's fashion, creative, full of special means, is a very useful accessory,will Fit All Chains. Zinc alloy stainless silver pewter jewelry and craft charms. Perfect for jewelry making. Assorted themes array of subjects and styles for all kinds of interests for parties or groups charms