It is very convenient - when cleaning, you run it on the window, you can calmly do other things yourself. He finished the window, squeaked. I take it, I rearrange it to the next glass. I'm on to something else myself. For example, I wash frames or wipe the dust. At first, it’s scary to put it on the outer glass. And suddenly it falls. But it does not seem to fall, it holds firmly)) I also washed all the mirrors on the cabinets at home. I'm usually too lazy to wash my hands. And this kid is doing great. I am very pleased with the purchase . I kept thinking and thinking, it was a pity for the money. In the end, I made up my mind. And I'm very happy about it)