FitSand (TM) 2PCS High Definition Scratchproof Screen Protector Film for Texas Instruments TI Nspire CX CAS & CX Graphing Calculator Perfect silicon, no bubble, fast adsorption Wear resisting and anti scratch, up to 3h hardness Excellent silicone coating tech-no glue trace, no residual Hight transparency stuff, screen sharpened display, pellucidity more than 98% Package Includes: 2 x Screen Protector Films