I have a Roomba 552 and the brushes and filters are a great affordable replacement and are close to OEM. On the other hand, the steering wheel has a serious design flaw. The bottom of the wheel is covered so the robot cannot see the wheel. If you look under the wheel, you will see two sensors that "see" the wheel and measure its speed and direction. You'll notice that the wheel is black and white, and that's how the robot does those calculations. On the original wheel you can see the wheel spinning from underneath (where the sensors are, but on this replacement they're completely obscured, meaning the robot can't calculate this information accurately and can cause navigation problems. Otherwise a great set, but use it for example not the wheel included in this set, see the video.