Hofi tempered glass is made of light and ground glass with a thickness of 0.3 mm, which does not affect touch sensitivity. The degree of hardness is given by the manufacturer as 9H on a ten-point scale. This gives it extremely high scratch resistance. The glass is crystal clear and has also been given an oleophobic coating, which minimises the amount of fingerprints or other contaminants. Check out the installation: www.youtube.com/v/8s3cmkqoeG0* The glass is compatible with most cases on the market. ** Due to the different milling at the edges of the displays, there may be a delicate air haze around the display after the screen protector / display glass has been installed! This is a natural situation and depends on the milling of the screen itself in a particular copy. INSTALLATION INSTRUCTIONS: 1) Begin installation in the bathroom immediately after bathing - water vapour absorbs all dust from the atmosphere and does not interfere with installation. 2) Clean and degrease the screen surface thoroughly and then polish it to a high gloss with a dry cloth. 3) Apply the cover as evenly as possible - you can position it with two sheets of tape and stick them to the side of the unit. 4) Remove air bubbles by pressing the whole thing in a circular motion for several dozen seconds. Do this so that the adhesive layer bonds to the screen in the best possible way. PRODUCT FEATURES: - 100% original - Packaged in original box - 9H hardness - Cut to fit the flat part of the display - 2.5D milled edges that are comfortable to the touch - Additional oleophobic layer - Perfect transparency - Does not affect touch functionality - Dimensions: 163 x 71 mm KIT INCLUDES: 1 x Hofi Glass Pro+ 1 x Installation Kit.