This stand is perfect for me. It supports safely and with complete stability Arturia my keyboard that weighs a good weight. The quality / price ratio satisfies me completely.
The installation was very simple: the machine without blemish, the screw threaded well have made it easy. My first test stand had been very negative and the price was certainly twice smaller: this explains it. The RTX is not very expensive though but it offers excellent quality.
The central bar and horizontal reinforcement is held by two holders and a third level is added to the junction of X. It is therefore not a model stand for mobility, but the rigidity of the whole is probably at this price.