9H Premium tempered glass for Samsung Galaxy A6s - Transparent Premium glass 9H tempered glass for the best protection for your device display Samsung Galaxy A6s. The glass protects flat part of the display and sticks over the entire surface, so it adheres to thedisplay perfectly and covers the flat part of the display only, ending at the point where the display begins to bend. The Samsung Galaxy A6s protects 5x more impacts than normal protective glass. Glass gluing instructions Application is easy. Clean the display as best as possible with the enclosed cloth soaked in alcohol and, after drying, polish the surface with the enclosed microfiber cloth. Before attaching the glass, make sure that no dirt remains on the display that would prevent the glass from adhering perfectly or they could devalue it. Before pressing the tempered glass, make sure that the glass is perfectly centered in height and width, and expel the air from the center to the edges. What does 9H hardness mean?