The RAM-B-316-30-238U consists of the RAM POD I universal No-Drill vehicle base, 30″ rigid aluminum rod, single 1″ ball socket arm and diamond base adapter. The base of the mount connects to your seat rail without any drilling necessary. The rod can be bent to position your device to its optimum viewing location. The RAM POD I will hold everything you need safely and securely. The diamond adapter base consists of a 1″ diameter rubber ball connected at right angles to a 2.43″ x 1.31″ diamond base. The base has two holes 1.912″ from center to center, matches the industry standard AMPS hole pattern and will connect to a large variety of RAM Mount and third party cradles.