Having been delivered this bench, I immediately started to mount. Well, I wanted at least. One must only look at the installation instructions precisely in advance, since it consists only of a picture where all assembly steps are displayed at once, without a certain Reiehenfolge. The screws are provided on the packaging, although with numbers, which are found on the assembly instructions, but on closer examination, I realized that not all the screws were numbered on the assembly instructions. Since I sometimes had only after the exclusion principle approach to catch the judge screws. Advisable would definitely be the nuts tighten with reasonable tools and not using the supplied tool. When tightening unfortunately I have done in some places scratches in the paint. Quite apart from that I have after installation about 20 minutes needed to stop the bleeding at the fingertips to breastfeed (Späßle :-) only should make it clear that I have struck my fingers several times). A Ratchen set would have been much better here in any case. Approximately 1 1/2 hours later, the unit was assembled. As long as you tighten all screws properly seems to be relatively stable the device. As for me, however, about 10 cm gap between the backrest and seat is quite bothering if you completely pulling the backrest to the horizontal position (see second image in the product description). Pretty annoying when weights lift supine. My Butt tends always to to slip directly into the gap in Stemmen. But we must not forget that we are talking about a device for about 100. Value OK