Accessories for iRobot Roomba 800 & 900 Series 800 805 850 860 861 866 870 880 890 960 964 961 980 | Package include:1 Set Rollers Debris Extractors. 3pcs hepa filters. 3pcs side brushes & screws.1 cleaning brush | Warranty:100% SATISFACTION GUARRANTEED.We offer refund or replacement for any dissatisfaction. | Hepa filter substantially increases the amount of dust, pollen, pet dander and allergens captured by the innovative filter design.Side brush allows your Roomba to reach deeper into the carpet for a more thorough cleaning. | Hepa filters, rollers(debris extractors) and side brushes should be replaced every 2 - 3 months.