Does the job, I use it to clean the dryer's second filter.. it does its job!! And generally, it is functional wherever there are small accesses!!

Maybe it does the job in the sense that it consists of many (15-20?) small tubes, so you can put them (at least some of them) in places where nothing else can fit.
The disadvantage for me is that the tubes are not flexible but rigid, so they can scratch any fragile surfaces and additionally you cannot bend them and have comfort in their use.

I bought it for the windows on my balcony. It does its job well in difficult areas where a regular broom cannot reach. There are two negatives: 1) the plastic ends are not soft, so if you apply a little more force, you can scratch the surface (if it is sensitive). 2) if it sucks up small pebbles, they get stuck inside the tube, so I simply turn the attachment upside down and the broom sucks the stones out of the pipes. Overall, for this price, it does the job perfectly!