... and durable. Material brass or iron and 18K, 24K true gold or silver Size ISO 85mm x 54mm, 80mmx50mm, 76mmx44mm or customization Thickness 0.35mm ... ,0.25mm,0.30mm,0.40mm or ... card, ID card, memorial card.Metal card is made of brass through designing, polishing, line-cutting mode, corroding, plating, ...