1. The Replacement Parts fully Compatible with iRobot Roomba 800 Series: Roomba 800, Roomba 850,Roomba 860, Roomba 861, Roomba 866, Roomba 870,Roomba 880,Roomba 890 Vacuum Cleaner. fully Compatible with iRobot Roomba 900 series:Roomba 900,Roomba 980,Roomba 985 Vacuum Cleaner. 2. The innovative counter-rotating debris extractor break down debris and lift dirt while the brushless design is virtually maintenance-free. 3. The extractor set is made of high-strength and environmental protection material. 4. Brand new brushes to Keep your Roomba operating at peak performance. 5. Easy to install, replace, and use. 6. Warm reminder: The main brush can be washed and reused. To keep your robot vacuum cleaner running smoothly, we recommend replacing it every three months.
