It looks as something good enough for a short term, or temporary application. Not for something more permanent.
If I were to use one (temporary application), I would not trust the legs being attached only to the top bracing, thus 'floating' independently. I would add some sort of attachment to the bottom of the legs, making sure that the legs are verical and at the correct separation (top and bottom) such that no leg can be mispositioned. As it is, it seems remarkably flimsy, regardless of the quality of the metal used for legs, frame and braces (which look strongish, but not meant to to resist any side displacement of a leg, and not be long-lived).