Review on 🧹 High-quality Brush Kit for Roomba 690 650 620 630 652 655 660 760 770 780 Vacuum Cleaner, Replaceable Bristle Brush & Flexible Brush Accessories by Lorena Grant

This appears to be less dense/lower quality than the original Roomba parts. However, the problem with my brushes and whisks is that they overtake the hair - very long hair. Medium quality is fine because the hair will kill the brush before anything else can break on it. In addition, the hair with a lower density is easier to remove from the comb, which is a plus.