Exactly what I needed and was delivered so quickly my 'bot' was up and running within a day or two. I've found that I actually get more consistent results with this blade brush than the denser brush I used. The other brush picks up more small things ("may”), but also sticks more easily to carpet fringes and cords. Natasha works with this brush blade with practically no human intervention. So now I leave another brush for spot cleaning when observing.