Of course you should read the reviews at something "between the lines", because it is precisely stability and assembly not requiring tools like a red thread has nevertheless drawn by almost all reviews and I believe that another note here and take something out.
Structure:
Personally, I have resolved myself fairly quickly from the manual, because the assembling really works easily and logically.
(Read Topic between the lines) BUT was here more than once correctly remarked that one works best with Ratschel and key from its own collection (10), otherwise lasts all felt forever.
If only times everything is, you should not assume that the shelf is stable without wall bracket (since then is probably the explanation for the low price, but that does not meant here is disrespectful). It has two anchors accompanied incl. Screw material which can be used for good as well mM process. Have short purely drilled with a 8-drill into the concrete wall and sunk dowels with screws. Keeps bombproof.
In summary:
+ Fast and easy assembly (with corresponding own tool, but actually of course and absolutely ok for me)
+ Stable when it is drilled in the wall
+ Angle to take out the boxes and drinks ansich I feel (me neither stoop down must still stretch upward) as personally enjoyable with my tight 1.80m
+ It fit so far all I know crates (12 at the moment Coke / 12 x 0.75 Water Glass Bottles / Becks 20x 0.5 / Eurobox for individual things fits well in dimension 44x35x24 cm)
+ Price / performance top
Neutral:
Stability without wall mount does not exist (but not expected)
Custom tool highly recommended (as I said, not to be regarded negatively in my eyes, because even expensive products are not always exemplary Again)
Conclusion:
Those looking for a feature-ables shelf and also has no problem with drilling holes, and further has a toolbox with Ratschel and key, is determined happy here. From me anyway full recommendation!