The RAM-B-166-GA7U consists of a 3.3" suction cup locking base, socket system and custom high strength composite cradle for the Garmin GPSMAP. The mount is designed with a RAM 1" diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm; this allowing for almost infinite adjustment and perfect viewing angles. RAM’s patented design dampens shock and vibration helping to extend the life of your mobile device. The suction cup, twist lock base is designed to have a strong hold on glass and non-porous plastic surfaces, including adhesive disks.