Consists of a 3.68" diameter round base, STANDARD length double socket arm and 11" x 3" rectangular plate. The round base contains pre-drilled holes, including two holes at 180 degrees and three holes at 120 degrees. The rectangle plate contains different combinations of pre-drilled holes which will match up to many electronic devices and mounts. Overall length is 11.5" and has a weight capacity of 15 lbs.