【Exclusive Craftsmanship】Double-sided polymer heat transfer coating. Extra anodized - enhanced surface adhesion for photo-quality fine detail. 【Waterproof Aluminum Alloy】All made of new materials, waterproof & fade-resistant. And will not be easily bent, edge is smooth, double surfaces have no scratches. It has good thermal conductivity, the sublimation effect will be fine. 【Photo-quality Sublimation】Double blank surfaces are already with high quality polymer heat transfer coating, it can be thermal transfer print directly. The sublimation print temperature is 170-200℃ / 340-390℉, the time is 30 - 60 seconds, it depends on different devices. 【DIY Personalized Cards】It is suitable for business promotion or personal usage. Aluminum business card has jam & smudge-free performance, adds crisp text and vibrant images to both sides of your professional business cards. 【Package Including】One pack contains 25 pcs blank sublimation metal business cards, the thickness is 0.22 mm, the size is 3.4 x 2.1 inch, same size as credit card. Origin-Joy 25 PCS Sublimation Metal Business Cards Waterproof, 3.4 x 2.1 Inch Aluminum Printable Business Card Blanks for Custom Color Print (0.22 mm)