Tempered Glass is a clear, thin glass with a thickness of 0.3mm that achieves a high level of hardness (9H) through special heat treatment. When installed, it reinforces your mobile screen, and in case of a drop, the glass wears out instead of the mobile screen. Installation is easy, and it can be removed just as effortlessly, leaving no marks on the screen when removed. It comes with a special easy-application tool.