WIDE COMPATIBILITY: The metal phone plate (NOT MAGNETIC) is perfect for all magnetic air vent car phone holder, magnetic windshield suction cup car phone holder, dashboard car phone magnet, car phone magnet clip and other types of magnetic car phone holders. . WARNING: These telephone metal plates ARE NOT MAGNETIC. . ULTRA THIN and DURABLE: The magnetic car phone holder replacement metal plate is made of high quality manganese steel with the thickness of only 0.5mm, which is light and practical, durable and not easily deformed. . UNIVERSAL METAL PLATE: Two types of metal plates (round and rectangular) are available for application on multiple devices, such as mobile phones, GPS and mini tablets. . STRONG ADHESION: The metal car phone plate has a strong grip to keep your device stable and secure while driving. The self-adhesive metal plate will not fall off and will remain for a long time. . PROTECTIVE FILM AS A GIFT: Please use transparent film before sticking adhesive metal plate so that your phone will not leave sticky residue after peeling. . EASY TO USE: Just stick the thin metal plate on the back of the phone, the back or the inside of the phone case, they work well and are easy to install. .