Spinido Metal Plate with Adhesive Replacement Metal Plate Kits for All Magnetic Car Mount X 2 Pack (1 Rectangle and 1 Round) Compatible with most smartphone and iPad versions of magnetic car mounts. Sticks onto any flat surface (rear of smartphone, or case of smartphone) with 3M tape. The metal plate can easily sticks to the back of devices for easy mounting Rectangular and Round metal magnetic plates to attach device onto magnet mounts. Works with magnet mounts designed to hold devices with the metal plate