These cufflinks and Studs set are made of copper. Cufflinks: 18 18mm. x1 Cufflinks Set. Studs: 11 11mm. Nickel and lead free. SECURE AND DURABLE: Great Jewelry for Sensitive Skin Hypoallergenic ,made of durable material and through a rigorous processing process, solid and durable, perfect to keep as a wedding jewelry.
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