Aluminum business cards (100 pcs) Durable laser results: The engraving effect on these cards is white or nearly white depending on the settings. The engravings are permanent. Versatile applications: Suitable for business cards, door signs, labels, metal signs, vehicle VIN plates, tag ID metal signs, vehicle ID plates, serial number plates, etc. Also perfect for logo and photo engravings. Compatibility: We recommend using the LaserPecker LP2/3/4 for creative DIY laser engravings. Material: Made from high-quality aluminum alloy with a black coating, not easily bent or warped, smooth and flat, rust-resistant. Dimensions: 85 x 55 mm / 3.35 x 2.17 inches (L x W), 0.1 mm thickness Packaging contents: 100 pieces per pack