Installation: Very easy, just the right Allen and Phillips needed instructions completely sufficient, because you can really do almost nothing wrong. Disassembly would be as easy, but for me he stay tuned.
Function: Extremely fast and easy on and again ausklicken! I use the adapter mainly for the really ingenious Vario Rack, hence the lockable version, so that the wearer can remain on the wheel without getting equal "legs" to. Capacity is specified with 7 kg of which I also often ausreize that stability is exemplary, nothing wobbles, even after prolonged daily use - super! In addition, the driving stability is not greatly disturbed, as I had feared, but that is certainly at each wheel a little bit different. In any case the child seat behind me a much greater nuisance for the balance when the fully loaded VarioRack so too!
Price: I find the overall package offered perfectly fine, actually even beneficial. Very good I think also the compatibility with various other accessories of Rixen & Kaul as well as other well-known manufacturers (eg Vaude).
From me a very strong buy recommendation!