Hardness:9H- 3 times harder than PET screen protector. the screen will not get scratched even using hard object such as knives and keysDelicate touch:- On back side of glass coated with a strong silicone layer to make installation easily and attached screen tightly so as to not affect sensitivity of touch screenOleophobic coating:- Nano technology processing for Oleophobic coating which prevent finger print leaves on surface of screen and dirt thing can be cleaned very easilyAnti-shatter:- The glass screen protector will not broken into small piece with sharp edge.It still keeps a whole piece of screen protector to protect your phone screen against scratches