PThink 0.3mm Ultra Slim Nano Tempered Glass Screen Protector for BlackBerry Q10 with Perfect Anti-scratch/Shatterproof/Fingerprint resistant (BlackBerry Q10) Perfect Anti-scratch: 9H greatly intensified surface hardness which is 3 times stronger than regular PET film. Even sharp objects like knives and keys will not scratch it. Perfect Anti-Shatter: 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 products. 0.3mm Ultra-thin, specially made with scratch resistant material and rounded edges for a more precise fit. Tempered glass film provides super smooth touching as well as no lose in touch screen sensitivity. Coming with a screen polishing cloth and an alcohol wipe, helps you wiping away marks and fingerprints during the easy installation, remember not to fold the tempered glass film when installing.