The RAM "Magnetic Power Plate III" is designed to hold various devices including radar detectors and cellphones. The magnetic plate includes two powerful rare earth magnets, rubber cradle and two adhesive metal plates. To mount your device to the magnet, you will need to attach one of the metal plates to the back of your device. Includes a rectangular 50mm x 38mm x 0.08mm thick metal plate with adhesive back. This kit works well for attaching Valentine, Passport and other automotive radar detectors to motorcycles.