The assembly is actually quite simple when one considers that the mounting holes are not mounted centrally on the support and standpipes. This must be so because there is the vertical struts offset. Here I missed a little hint or a small guide in the package. Unfortunately, there are no options on the feet smooth away any unevenness in the floor. The rounded surfaces on which the keyboard are made of hard plastic, the keyboard slides back and forth, other manufacturers use this rubber parts, which ensure a secure grip. The height adjustment of the pin is very hakelig and you have to watch on, that does not collapse the stand, if one here wants to make an adjustment. Have the part returned and got me at LIDL bought a keyboard stand, which has a width / rubber pad for safe grip, non-slip feet for added stability, quick release with tooth system and an end cap to compensate for uneven floors. The keyboard stand of LIDL was cheaper, better and fulfilled my expectations.