Good but attention to elbows

Tested on K 7.85M to unclog a pipe. Did his work on a drain clogged gutter diameter 8 cm. Fortunately, the problem took place at the first bend after because I wanted to clean up the pipe to the exhaust and the passage of two elbows was a bit laborious. Perhaps also because the pipe being uncorked, there was no water for "lean" and move on.

I have not tested the gutter cleaning module.