The Glass Screen Protector for the Samsung Galaxy Grand Duos GT-I9082 has been specially made with scratch resistant material and rounded edges for a more precise fit. Due to the 0.23mm thickness and surface hardness of 8~9H the Glass Screen Protector provides premium protection and no lose in touch screen sensitivity. Surface hardness : 8~9H : Three times stronger than regular PET film. Even sharp objects such as knives and keys will not scratch the Glass Screen Protector. Oleophobic Coating : The Glass Screen Protector has an oleophobic coating that prevents fingerprints and other contaminants and makes the film easy to clean. Anti-Shatter Film : If broken, the Glass Screen Protector cracks into small pieces that are held within the film. They are not sharp, making it safer than other glass products. CAUTION *When removing for re-use, the adhesive properties might wear off to an extent where the screen protector will not adhere to the device. It is not recommended to reuse the Glass Screen Protector once it's been applied. *Using excessive force when installing or removing the screen protector may damage the product.