Eteyo Premium Real Tempered Glass Film Screen Protector for Apple Iphone 6 Plus 5.5" Can't Be Scratch the Surface Tempered glass construction for enhanced impact resistance and reduce the chances of screen damage. Made with chemically treated, transparent tempered glass with silicon adhesive to keep it in place. The screen protector has an Oleophobic coating, which prevents fingerprints and other contaminants which makes the screen protector easy to clean. In case of screen damage, the screen protector will break into small pieces that are not sharp, making it a lot safer than other glass screen protector available in the market. The surface has a hardness of 9H,which is 3 times stronger than regular PET film. Sharp objects such as knives and keys will not scratch the surface.