Car suction cup Mount Holder for Garmin GPSMAP 62 62s 62st eTrex 10 20 Amazon.com: GPS Suction Cup Mount for Garmin GPS MountStrong suction SUCTION CUP LOCK TO GARMIN GPSMAP RAM MOUNT Aerosupply Garmin GPSMAP 276Cx, Montana 600 series and Monterra Auto Suction Cup. The RAM B 166 GA14U consists of a 3. 3" suction cup twist lock base, double socket arm and custom high strength composite cradle for Garmin GPSMAP 78 devices. The suction cup base is designed to have a strong hold on glass and non porous plastic surfaces, including RAM adhesive disks. 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. HARDWARE INCLUDED Assembly Hardware SUCTION SIZE 3. 3" Diameter SOCKET TO SOCKET LENGTH 3"