RAM Mounts Pin-Lock Universal Marine Electronic Mount with Gimbal Knob

The RAM-SG-D-111U consists of a 3.68" diameter round base, STANDARD LENGTH double socket arm, 11" x 3" rectangular base, RAM mixed combination Pin-Lock security nut/knob and key knob for Gimbal Brackets. The round base contains pre-drilled holes, including two holes at 180 degrees and three holes at 120 degrees. The rectangle base contains different combinations of pre-drilled holes which will match up to many electronic devices and mounts. Overall Height: 11.125" Weight Capacity: Up to 6 lbs. Plate Hole Patterns