Compatibility - This replacement kit is compatible with iRobot Roomba 800 850 851 860 865 866 870 871 876 880 885 886 890 891 896 900 960 966 980 990 - Replace the filter every three months. to home can effectively remove dirt and dust, debris or particles from corners and edges, and help to eliminate dust, allergens and other particles in the air. Particularly suitable for for hair and pet hair. High quality; made to from environmentally friendly materials and high resistance. It has undergone rigorous compatibility testing. and durability. What you get: A complete maintenance kit, each package includes 4 filter kits, 6 side brushes, 6 screws and 4 sets of rubber rollers. As the original parts - equivalent to the original parts. Excellent quality/price ratio. It is very suitable to replace worn parts. Compatible with iRobot Roomba series 800 850 851 860 865 866 870 871 876 880 885 886 890 891 896 900 960 966 980 990 The filter needs to be replaced. every 2-3 months for best results Packaging: 4 x set of rubber rollers 4 x filter 6 x side brush 6 x screws