Ozgoe JF-03 Happy Bell Mount Metal Plate for Magnetic Car Mount with 3M Adhesive 4 x Rectangular 4 x Round, Pack of 8 Rectangular metal magnetic plates to attach device onto magnet mounts Great to use with smartphones and tablets magnet mounts The magnetic plate mount easily sticks to the back of devices for easy mounting Very easy to attach without a hassle Works with magnet mounts designed to hold devices with the metal plate