Inexpensive water collectors

I have thought long which water collector I use for 2 downpipes. Ultimately, I decided due to an unbeatable price tag for this here. Installation is very easy! Interrupt downpipe to a plugged site or sawing drainpipe in the required range, use Füllomat where previously the Fallrohdurchmesser has been adjusted at the upper aperture ring by blade knife. When moving the spray summer to winter operation a little silicone oil and try not possible with your fingernail to move slider. A screwdriver or a Grippzange are helpful. On extension outlet tube, a Gardena system are connected. Everything perfect and worth every euro. Lots of money saved compared to much more expensive systems!
Clear recommendation !!!