Business Cards, 50Pcs Business Visiting Name Cards, Impressive Blanks Laser Mark, Engraved Metal Smooth, for Laser Engraving DIY, for DIY Gift Lable Tag Cards, 3.4 * 2.1 * 0.01inch, Black

I was hoping my laser would at least remove the paint, marking these cards with a Laser Pecker 1 pro proved impossible, even at maximum settings, the pecking abilities were too much for the little pecker to make a dent. Nothing at all wrong with the cards! Very clean finish, with no surface marks or sharp edges!Highly recommended, if flexible near-indestructible black aluminium blank business cards are your thing!