Anti-scratch: 9H greatly intensified surface hardness which is 3 times stronger than regular PET film. Tempered glass film provides super smooth touching as well as no lose in touch screen sensitivity. 0.3mm Ultra-thin, specially 2.5D rounded edges for safety and a more precise fit. When facing heavy impact or broken, this nano glass cracks into small pieces that are held within the film with safety and no pointed edges exposed.