The RAM-B-111B, powder coated marine grade aluminium plate includes a 1" rubber ball and flat 6.25" x 2" rectangular plate. The plate contains different combinations of pre-drilled holes which will match up to many electronic devices and mounts, including Marine GPS, CB Radios, Ham Radios, Gimbal Brackets and more. Rubber ball and socket technology dampens shock and vibration, as well as allowing for almost infinite adjustment and perfect viewing angles. For most applications, mount will support up to ten 5kgs. The RAM-B-111B is compatible with the following electronic devices: Garmin GPSMAP 162 Garmin GPSMAP 168 Garmin GPSMAP 175 Garmin GPSMAP 180 Garmin GPSMAP 180C Garmin GPSMAP 182 Garmin GPSMAP 185 Garmin GPSMAP 188 Garmin GPSMAP 232 Garmin GPSMAP 238 Material: Powder Coated Marine Grade Aluminium Ball Size: 1" Rubber Ball "B" Size