Tempered Glass Screen Protector Apple iPhone 7/8 (3D, black). This protective glass is made from tempered glass and reaches 9H according to Mohs. It will protect your device's screen from mechanical damage such as bruises or scratches left by sharp objects. The glass is 0.33 mm thick, so reliably protects the phone screen and is barely noticeable. Features:9H on the Mohs scale. Tempered glass is a glass sheet, heated close to the melting point and suddenly cooled, its resistance after this procedure becomes 9 times higher than that of ordinary glass due to the chemical and physical properties of the material and the process itself. Delicate touch. Only 0.33 mm thickness maintains the original touch experience. High transparency: 98% light penetration ratio preserves the original viewing quality. Perfect adhesion. In order to avoid the uneven surface of the screen protective glass has a very strong adhesion to the phone display. Shatter-proof. If broken, this screen protector cracks into small pieces that are held within the film. They are not sharp, making it safer than other glass. 3D technology. This technology replicates the original surface of the phone screen, so this glass fits extremely well to the phone screen. Ultra clear. Whole transparency keeps unchanged the screen lighting and color. Specifications:Thickness: 0.33 mm. Complete set:Tempered glass.Microfiber cleaning cloth.Cleaning cloth with alcohol.Dust absorber stick. Compatibility:Apple iPhone 7.Apple iPhone 8. Manufacturer: Extra Digital.