So it took us a couple brief 2 'hours to build. The major shortcoming was to get the male "rounding" is properly inserted in the last plug-in element. It only helped that we had to make the "tire" then on edge and then by pulling down (hang) and simultaneous push from above (with ladder), the connection but then get even installed correctly. Phew ... That's a wrap. Then the power wude spread and then loaded by the springs / tense. This work went quite quickly by equip. The outer retaining rods were then still mounted, it must be said here that the supplied nuts key is absolute junk and was ausgenudelt relatively quickly. Thus, once the rods were properly secured there was the safety net and the job was done. The user manual provided we would give the school grade 3-4, as was partially unintelligible illustrated and described. Conclusion: The unit makes a rock solid impression. The price-performance ratio is reasonable.