The RAM upper Tele-Pole™, 4" male pole, contains a swing arm connection point that will attach directly to any double swing arm system with 1.5" Socket. The male post is 4" long and has a diameter of 1.328".
Powder Coated Marine Grade Aluminum
The "U" in the part number reflects product packaged in poly bag.
Upper Tele-Pole™ Assembly Instructions
RAM® Swing Arm Knob