I was told to take Grohe ...

It's six months that the column is installed, I was satisfied so far.
The quality looked really good, and then overnight the cap to adjust the flow rate remains in my hands.
I look at the screws that held it all, it is broken in the middle. A piece of the screw is stuck inside I do not know how to remove it ... There's only me to take a shower in it, I know she was not harmed .. .
5 year warranty yes, but you need it to get an answer from Grohe customer service that is not responding to my email amazon provides.
Too bad!