I now train several weeks in order. 2 shortcomings have occurred:
The weight plates are of the production still very oily and also a very strong smell. You train with it in living rooms and places the dumbbells onto carpet there black spots. I always have a towel there and rub the slices with every alternate. At some point, that problem has then resolved itself.
The Star nuts tend to solve itself. Care must be taken and often times follow suit so that there is no "accident" already a bit.
Otherwise, the weight bars have very difficult fit because they are very long. They are good in the hand and are very handy.
For discs and rods with diameter 30, there are many expansion options so that you can build on this great set.
A really very fair price for this set and an absolute buy recommendation!