Only the stability in heavy constructions such as LED video lights can be regarded as criticism. Although these are usually under the 1000 g specified as the maximum load from Cullmann, the spatial extent of such products for a certain instability seems to care, threatening but in no case. The installation of equipment to the hot shoe looks a little shaky at times, a bit higher quality material for the adapter would have harmed here under no circumstances.
The rest of the acts CB2.7 quality and should withstand the specified specifications effortlessly.
Conclusion: good overall package for little money with just a few weaknesses. Anyone looking for a Cheap mounting facility for assemblies with hotshoe and the adapter is not just for everyday use need to be happy here.