The brush, if you can even call it that, is so thin it's not even funny! My toothbrush is thicker/wider than this thing's bristles! It's basically as useless as it gets. The brush stays in place when you press on it. The opposite end goes well with the vacuum hose. I am just very disappointed in the brush. I figured I'd save $10 instead of spending $22 on the Shark brand I bought a few years ago (and the brush was a lot thicker!). So this time I got what I paid for :(