with the installation, although the pipe diameter was 18mm. Went after oiling by force. The oil should not be good for the plastic. Bullet-proof Now sitting on the wall rod, there must be no smaller or larger come visit for showering. ;-)
What bothers me is also the largest possible angle, this would have more face down. Now the beam will pass with a normal shower head to the upper tub edge and not in the middle When.