Housweety Bronze Tone Pattern Bookmarks With Loop 85mm(3 3/8Inch) 10PCs Material: Zinc metal alloy(Lead and nickel safe); Main Colour: Bronze tone; Weight: 30g; Approx:85mm(3 3/8");Hole size: 1.8mm(1/8");Thickness: 2mm(1/8"); You can use them as a charm for your jewelry DIY.