This tempered glass is 0.33 mm thick and curved, made with chemically heated transparent glass. With a surface hardness of 9H, it can effectively protect your mobile screen from scratches and external shocks. It's oleo-phobic coating prevents finger prints and other stains making it easier to clean. The self-adhesive silicon makes the screen smooth and sensitive for operation. If broken, the tempered glass breaks into smaller pieces which are not sharp making it safe for the user.the tempered glass has a curved finish.