The RAM-SG-D-111 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.
Note:The 11" x 3" rectangle base is a universal mounting bracket with a selection of mounting hole locations. In certain applications additional holes may need to be drilled for proper fit with your electronic device.