Ultra-Thin Design: Measuring only 0.25MM, this is compatible with ALL laptops and tablets, achieving a seamless look without interfering with the functioning of your device. Ultra-small size 8*10mm: After installation, the computer with a black border 8mm not block the display content, and the computer with a black border 10mm can be installed vertically. The thickest is only 0.25mm: Made of special carbon steel, the base plate, slide groove, and slide cover are a 0.25mm space, which may be the thinnest lens slide cover. Universal Compatibility: Whether you use for Pro/Air, for Pro/Air/Mini, an Android tablet, or a desktop computer, this fit seamlessly with all devices. Colour:Silver Material:Carbon Steel Size:8 x 10 x 0.25mm Package Contents: 2 x Lens Cover Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.