The lower female Tele-Pole™ will attach to all RAM vehicles 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 or cradles. 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.