Obtained for almost 10 EUR a set which can compete with similar products from reputable manufacturers aquarium readily. After a month in continuous use in the design of a new pool no wear or rust marks can be seen. The workmanship is good - not very good - but for the aquarium use more than adequate.
The only drawback for the pelvic floor straightener among us: A gravel Patel missing, but let's face it - a wooden spoon does it well. And who in the basin has "active ground" fish (catfish can greet) has already system sold to interior designers.
For the product and the processing I give 4 points for the P / L ratio a top. The competitors will undercut here at similar quality by a factor of 2-4.