The build quality is adequate for the price, everything works.
Only in the last drum allows the union nut from the hose connection inside the drum tighten not good, Niagara Falls are the result. I have now times glued with a silicone sealant, in the hope that the holding until I get replacement (hopefully).
Another smaller minus point, fully up tube, which also still has water slides the upper tubes from the mount, with this clamp mechanism can be the pipes are not 100% secure, no matter how firmly the nuts are tightened, as I have now with rivets nachgeholfen.
At the tube-holder for the wall and bottom of the support I have additionally mounted ratchets so that there now can slip anything.
After this tuning everything works as it should.
For the price absolutely recommendable.