The instructions are terrible, they don't make sense. Inside a tube it is rusted and the turns in the joints are worn out, so it slowly solves itself. I assume the defective piece fell to me

I don't have anything negative!! The first time I assembled it, I needed to be careful not to make any mistakes. The instructions are clear and each piece has a letter, starting from A, etc. Since then, every day, placing it in a spot in the house with space around it takes only a few minutes, as I don't disassemble it, I simply loosen it and move it to a corner in the hallway and tighten it just enough so it doesn't move for storage (a few turns). No part slips and its material is excellent. (Just make sure to take a shower before the workout to remove any traces of oiliness from the body.)

I have it for a month. It is pretty good for its price but it needs to be tightened at small intervals because the screws loosen and it makes noise.