HOUSWEETY 50PCs Bronze Tone Adjustable Ring Settings 16.7mm US6.25 Material: Alloy(Lead and nickel safe); Main Colour: Bronze tone; Approx:16.7mm dia.;Hole size: 16.7mm Thickness: 0.6mm; Weight: 44g; Perfect findings for making jewelry.Every findings has its unique design and style and theme, hence the necklaces and bracelets made with them are unique and represent your own fashion.