I've waited 5 months to make sure it's accurate and not just the first impression. The wire brush cover that came with my Roomba broke after about 2 years. Since this part cannot be replaced by itself, I took it. Installation wasn't difficult. However, Roomba's dust container is very cramped. As if the specifications were 4 or 5 millimeters. Because of this, retracting the trash can is very difficult. I really liked that the Roomba does so much manual work, but when just emptying the bin is so difficult, it takes the fun out of having a Roomba.