The RAM-B-149Z-AQ7-2U consists of a zinc coated u-bolt base, double socket arm, diamond adapter base and AQUA BOX® Pro 20 case. The included cradle clip attaches directly to the mount, and serves as a quick release mechanism, allowing you to quickly insert or release the AQUA BOX® case. 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. Included in this package is hardware that will accommodate rails from 0.50" to 1.25" in diameter. The base includes black cover caps to be placed over the exposed ends of the u-bolt. The included composite rail adapter can narrow the rail to a minimum width of 0.5".