I have this aftermarket -Bought accessories because official Roomba replacement parts are much more expensive. Pros: 1) You get 8 filters versus 3 from the iRobot kit which costs twice as much at $42 versus $19,492 that didn't come factory with Roomba. Cons 1) The yellow brush comes with screws that are not fixed in the spinner. Roomba comes with a captive latch so you don't lose a tiny screw when you remove it for cleaning. So basically I'm not going to use the yellow meter. The kit came with 8 but after 200 hours the factory installed spinner was in great condition so I'll just forget about it. All in all, it's a pretty good price. If you need to replace the yellow gauge, avoid this device.