The 400-TQXL-03 is intuitive to assemble! Remove all parts from the box, set up the base, insert the extension pole cap side down, put the clamp bracket on top of the extension pole, remove end screw from clamp arm, insert clamp arm into clamp bracket, reattach screw and tighten, add the tool tray and the wheel stabilizer (if you will be using them).
Current manual attached.
Tube Diameter: Large Tube 1.5" small tube 1.3"
Length of Inner Tube 38"