"1) Adapt to Nikon D3100 2) GGS LCD screen protactor is rigid and made of optical glass material, which achieves more than 90% of transmittance (higher than plastic LCD screen protectors), thus making the LCD screen clear. 3) Only 0.5mm thick with 6 layers of coatings and UV Protection. Optical glass strengthened through special crafting process. 4) Prevent scratches, collisions and moderate impact to the LCD screen. 5) The protector is reusable. 6) With the explosion-proof film, it will not damage the LCD screen at all,and its elasticity pressure has reached 12kg/cm2,preventing the LCD screen from being impacted. 7) With the connection of push-pull type or bayonet fixing,it is easy to install and remove."