It does its job effectively. It fits other vacuum cleaners with a 35-millimeter diameter hose as well. Under normal conditions, it sticks to the wall and doesn't need to be held by anyone. With the vacuum cleaner I tried it with, a Juro Pro, it didn't stick. Decent construction.

Necessary accessory for clean drilling. I didn't believe it could stand alone on the wall, but as soon as I attached the vacuum cleaner, I saw that it doesn't easily fall. So it leaves both hands free. It's worth its money if you have a Karcher vacuum cleaner.

It does exactly what it is intended to do. It sucks and sticks vertically and horizontally (ceiling).
If the final coating is rougher than usual smooth stock, it is obvious that it will not suction as easily. But in general, I almost never had a problem with vertical surfaces. On horizontal surfaces, there were some minor issues at times, but you can easily help it with your hand and you're fine.

It was also used on a non-Karcher vacuum cleaner with a 35mm hose, it fits but it's a bit loose. With some makeshift tape at the joint, it's okay.