OK. It's ridiculous to spend forty dollars on a vacuum cleaner brush. But man is a nice thing. It adapts to every imaginable angle and makes it much more convenient to clean hard-to-reach places. I have several blinds that I couldn't clean properly with anything else, and I have a bunch of different brushes for several vacuums. I am interested in negative reviews. Have some people come across a fake product? Stoppers are strong and effective. Miele isn't cheap, but the quality is always there in my experience. So yeah, I could buy a whole cheap vacuum for the price of this thing, but I don't regret doing it. I gave four stars for transparency but I don't know what transparency has to do with a vacuum brush.