YRLIN Tempered Glass Protective Film 9H Hardness Fingerprint Resistant HD Screen Protector Cover Glass for BLU Advance 4.0 Premium Tempered glass screen protector is specially designed for BLU Advance 4.0 Smartphone Unlocked Phone. Perfect Anti-scratch: The surface of the Tempered glass has a hardness of 9H, three times stronger than regular PET film. Even sharp objects like knives, keys and some other hard substances will not scratch it. Oleophobic Coating: The glass has an oleophobic coating for an oil-resistant, anti-fingerprint, glass surface that is easy to clean. Bubble-free adhesives for easy installation and no residue when removed. With High transparency (99.99% light transmission Ratio), Screen Protector Keeps your BLU Advance 4.0 phone screen HD Clear