Review on Enhanced Roomba 800 and 900 Series Tangle-Free AeroForce Extractor Set - Genuine iRobot Replacement Parts by Sara Hughes

Easy to install. I don't know what the other reviewers are hearing but mine works fine. The only reason I've ever had to replace my old ones was because I hadn't done my regular weekly maintenance on my robot vacuum. I usually check and clean the rollers, remove the impeller and remove any debris, and give the dust box and filter a thorough clean. Unfortunately I didn't and some of the hair got wrapped around the roller and actually cut through the rubber. Now I've got my maintenance plan back so I don't have to spend another $30 unnecessarily.