Can only be used on screens smaller than 3.0×4.125″. This kit includes an customizable grid for an easy adjustment to fit your specific screen size. Includes an applicator type card for a for a bubble free and smooth installation. Dual layer plastic has the highest PET rating which will not damage your phone, resists the most scratches, and is re-usable including the sticky sticky side. No expense was spared by Japan in creating this top quality screen protector for your device!