This RAM® Tele-Pole™ consists of an 18" lower pole, a 12" upper pole, double swing arm, and 75x75mm VESA Plate. The lower Tele-Pole™ will attach to all RAM® vehicle bases that do not contain a welded female Tele-Pole™. The height of the Tele-Poles™, combined, can easily be 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, allowing you to twist and tilt the viewing and operating angle of your connected device.