My N97's main brush was almost at the end of its life and although I have used other third party products to replace side brushes and filters this was a new purchase for me. This article is excellent. It fully meets the requirements and serves its purpose. If you still get an error message after installing this brush, please watch Eric Komurek's YouTube video before returning or revisiting this article. After such a long period of use, your Deebot's motor bushing may need cleaning, which was the case on mine. After doing this in addition to this replacement part, my Deebot was like new. The part advertised and sold here worked great; just as good or better than OEM.