The RAM-VP-SW2-8-2461 consists of a 8" upper male Tele-Pole, single swing arm and 3.625" square base that contains the VESA 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". The 3.625" square base includes a 75mm X 75mm VESA hole pattern with 1.5" rubber ball positioned 0.88" from the center of one edge.