Lightweight and simple to use, however the finish of the locking system of the lower part of the U-shaped feet is poor, particularly due to a misalignment of the holes for spring pin (presumably it is a manufacturing defect ). Thus the foot of length change becomes problematic so that we prefer not to touch it. Moreover it must be careful when traveling tray to hold the tilt panel because there is none of this restraint system. Skates under the movable panel would not have been the luxury to cushion any shocks to slam on the metal frame.
