RAM MOUNTS' RA-B-191CU mirror mount with standard length double socket arm and diamond base adapter is the ideal mounting point for lightweight electronics. This high strength composite mirror adapter with ball is easily installed onto your factory mirror. The mirror adapter is ideally suited for the mounting of GPS devices, rear view camera displays, radar detectors, cell phones, and so much more. The diamond base contains the industry standard AMPS hole pattern that will attach to most RAM cradles. The rubber ball (1 in) and socket technology allows for almost infinite adjustment and perfect viewing angles.