The RAM-B-149Z-UN4U consists of a zinc coated u-bolt base double socket arm and universal Finger Grip™ cradle. The mount is designed with a RAM 1" diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm; this allowing for almost infinite adjustment and perfect viewing angles. The RAM Composite Universal Finger Grip™ cradle is designed to hold a large amount of cell phones and electronic devices. The cradle comes with (3 sets) of four flexible rubber coated fingers placed along sides to grip your device. The fingers open by squeezing the ends to open the small finger arms. The bottom of the cradle includes a back plate that adds support to the device being held by the mount. The spine plate contains the universal AMPs and 1.5" x 2" hole patterns.