all kinds of background and border by brass or iron Metallic cardsFeatures:1/material: brass or iron and 18k, 24k true gold or silver2/size: ISO standard 85.5*54mm, or customized size3/thickness:0.3mm,0.5mm,0.6mm,0.8mm,1mm4/crafts: barcode, magnetic stripe, signature panel, personal data, embossmentApplication: Gift cards, advertisement, VIP cards, membership cards