【Mount Metal Plate】: Replace Metal Plate for Magnetic Mount perfectly and work along with all magnetic phone Mount, magnetic air vent mount and dashboard magnet car mount. This metal plate are not magnets mount, just the metal plates for magnet mount to adhere to. 【Strong Adhesive】. Mount Metal plates for Magnetic Holder have Storng adhesive on the back. It will not come off and no sticky residual after detaching. Powerful magnetic keeps your device stable and secure while driving. 【ULTRA THIN METAL PLATE】: This Metal Plate, the thickness of 0.5 mm, slim metal plates for magnetic mount easily attach to your phone. Smooth surface with no sharp edges would not damage your fingers and cell phone. 【Usages:】 Scratch-Resistant Protective Films Included, Simply stick Mount Metal Plate behind your case/battery cover, on a rugged case, or directly to your device. Then device will automatically suck as it closes to the car mount 【Package:】8 PACKS Mount Metal Plate. The big dimension is 2.57\'\' X 1.78\'\' for Large Screen Cell phones (4 piece) , Small one diamension is 1.97\" X 1.5\" for small size cell phones (4 piece)