Revain stock a variety of replacement parts for Roomba and in my experience they are all of the same quality but this kit offers the best value for money especially with the three sets of replacement brushes/ stirrers . I have a couple of dogs and they make number one on the Roomba with all the hair and dirt that's left, so this kit is perfect for replacing three brushes when they eventually wear out. One thing that sets this kit apart from the rest is that it comes with screws for the angled rotating brush - I lost the screw when the brush came loose on my Roomba and the replacement screw fitted perfectly. If you don't already have them, Roomba's standard hair-cleaning brush tools are included in the kit, in addition to small brushes that are good for cleaning the dirt that's hardened on the bottom of the Roomba. If you're looking for enough replacement parts to keep your Roomba running well over the long term, I definitely recommend this set over the many others at Revain.