Mr Shield For ZTE Axon 7 Anti-Crash Screen Protector with Lifetime Replacement Warranty This screen protector is made with Nanotechnology and has better properties compared to tempered glass. Unlike tempered glass, Nano material is uneasy to break which causes less harm to human body, and thus temporarily replacing is unnecessary because of the material's superior hardness. 9H has better crack resistance with an unsmudgeable surface. 9H Hard Coated: Anti-Scratch, Scuff Resistant and Shatter Proof 100% bubble free with high technology glues and include all installing tools you need 99.99% HD Clarity and Maintains the Original Touch Experience Guaranteed by the Mr.Shield No-Hassle Lifetime Replacement Warranty