The RAM-B-407-201U consists of the Tough-Wedge and standard length double socket arm. The Tough-Wedge is a seat wedge mount that fits in the gap between the vehicle seat and center console; allowing easy access and operation of your mobile device. The Tough-Wedge can also be used for back-seat applications, inserted into the pockets located on the back of the front seats. 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. The standard length double socket arm measures 3.68″ and will connect to all RAM cradles/adapters with a 1″ ball.