The RAM-B-149Z-AQ1U consists of a zinc coated u-bolt base, double socket arm, round adapter base and sealed enclosed large size AQUA BOX^®. The mount is designed with a RAM 2.54cm (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 clear, touch through screen allows you to view your electronics as well as use their function keys while in place. There is even a place for a small lock to serve as a theft deterrent. Included in this package is hardware that will accommodate rails from 1.27cm (0.50") to 3.18cm (1.25") in diameter.