GGS Electrostatic Technology Self-adhesive 0.5mm Optical Glass Reuse Camera LCD Screen Protector for Pentax K30 K50 Dslr Static electricity technology, with 130g/ cm adhesive force and non-separated while in usage. 0.5mm Optical Glass made in Japan, transmittance over than 90%, suitable for protecting the touch-screen and swivel-screen, dust-roof,sweat-proof,and anti-aging. Strengthen and Polishing process of the glass surface, hardness over than 8H,anti-friction and anti-scratches. Built-in explosion-proof layer, elasticity pression up to 12kg/cm, explosion-proof and impact-proof. Suitable for:Pentax K30 K50