The RAM-B-177-UN4 consists of a glare shield clamp base, double socket arm and universal Finger Grip™ cradle. Simply locate the clamp on any clamping surface up to 5/8" thick and gently snug the nylon thumb screws. The double ball & socket system will provide perfect viewing angles to get the most from your electronic device. The RAM glare shield clamp with double ball & socket system is far and away the most discrete and clean way to mount most any compact electronic device to the glare shield of your aircraft.