Anti-tangle mechanism works. Compared to other $12 brush accessories, this one doesn't tangle. Thanks to the channels on the underside, the suction power can also pick up hair and dirt well. However, it is possible for all vacuum port accessories to become clogged or stuck. In this case INSIDE the bottom inlet after the brushes. The brush mechanisms work well, but when a mass enters a 20 or 30mm wide entrance, it slows down. If enough dirt gets in, clogging can occur. The brushes keep spinning, but you can hear them slowing down, and the same channels that had suction kick back from the lack of vacuum and are now blocked while the brushes spin to remove debris. To fix this problem, remove the accessory and clean the top. Part of the inlet of hair extensions. In my case it concerns hair and some dust. You should be able to see the top of the brushes when they are clean. If not, then there is garbage. Once this is restored, the device will return to normal. Having spent $12 x $3 on various inexpensive accessories, I'm glad to see it didn't fall apart like everything else, which is good. But it clogs, so unless the garbage load is heavy it doesn't require maintenance as it might seem. Despite this service, I'd rather buy one device than 3 others that broke before.
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