GGS DSLR LCD Optical Glass Screen Protector for Pentax K-X Digital SLR Cameras It is rigid and made of optical glass material, which achieves more than 90% of transmittance (high Only 0.5mm thick with 6 layers of coatings and UV Protection Optical glass strengthened through special crafting process Prevent scratches, collisions and moderate impact to the LCD screen The protector is reusable