I bought this kit primarily for the side brushes and didn't get a chance to try the rest of the parts. It's clear that the company that makes them hasn't actually tested them on Botvac. If they did, they would find that the side brushes are so stiff and not tilted towards the floor that they don't touch the floor and get caught in the body of the vacuum cleaner. I tried all 8 brushes and none turned. I then trimmed about 1/4 inch of the bristles which kept the bristles from getting caught in the vacuum which allowed the brush to spin, but after trimming the bristles are so short they can't actually sweep anything because they do are too short and barely reach the floor. This is clearly plagiarism. I would save your money and look elsewhere.