Vktech Ultra-thin Explosion Proof Tempered Glass Screen Protector Film for Samsung Galaxy S4 IV i9500 (Gold) 99% Transparency: 0.3mm thick and made with chemically treated, transparent tempered glass. Surface hardness 9H: The surface of the screen protector has a hardness of 9H, three times stronger than regular PET film. Even shard objects such as knives and keys will not scratch. Oleophobic Coating: The screen protector has an oleophobic coating that prevents fingerprints and other contaminants and makes the film easy to clean. Delicate Touch: The screen protector is coated on the back with a strong silicon adhesive that makes installation easy and attaches the film firmly so as to not affect the touch screen sensitivity. Anti-Shatter Film: If broken, the screen protector breaks into small pieces that are not sharp, making it safer than other glass products.