The RAM-VP-SW2-8 consists of a 8" upper male Tele-Pole™, single swing arm and 2.5" round base that contains the universal AMPs hole pattern. The Tele-Pole™ can be easily adjusted by turning the knob at the top of the post. Once the knob has been tightened, the Tele-Pole™ becomes a rigid support for connecting devices or cradles. The Tele-Pole™ will connect to any RAM vehicle base with a welded female Tele-Pole™. The length of the double swing arm is 6".