About once a week I have to completely detangle these brushes for my Eufy. Most of the time the bristles will go back to their normal shape, but sometimes they are completely destroyed, getting caught in hair and the like and can't be restored. They are a good replacement, they look just like the original vacuums that came with my original vacuum and fit well. Best of all, they're very cheap, albeit not cheaply made, and they seem to have about the same durability. Hooray!
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