As far as I can tell, the brushes actually work well; However, they make a strange clanking noise when the machine is running. Not sure if the sound is inherent in the two piece design or has something to do with the quality of the brushes. They also definitely don't last as long as the Roborock brushes, but that's to be expected for the price. Update: I bought a set of Roborock brand brushes and hell there is a difference. The bristles on the Roborock grinders are much stronger and cleaner. There is also no rattling noise like with these brushes.
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