Features: ---4" wide mounted on a vertical surface base, mounts to flat surface. V-shape casting also allows for mounting to a round post/rail* ---Two - 6" swing arms - One connected to the vertical base and the other connect to the other swing arm ---At the end of the second arm is an open socket arm that fits any RAM 1.5" ball ---Each arm has and its own adjustment knob allowing each arm to be moved independently and can rotate 360 degree. Once tightened the arms are secured in place ---Arms extend 12" away from the vertical base if fully straight ---Constructed of powder coated marine grade aluminum ---Genuine RAM Mount: Part # RAM-109VS-5NBU ---Manufacturer's lifetime warranty ---Made in the USA * Mounting hardware not included.