【Perfect Replacement Parts】The replacement parts kit is suitable for irobot Roomba 800 900 series 805 860 870 871 880 890 960 980 981 985 vacuum cleaner, the accessories contain everything you need to maintain the practical robot set. [High Efficiency Hepa Filter]: We usually need to replace the HEPA filter every 3-6 months, this filter paper is made of PM2.5, the purification efficiency is as high as 99.98%, and it filters out tiny particles to release them. The air is fresher, preventing secondary pollution, effectively protecting the motor from inhaling tiny dust and extending the service life, thereby extending the service life of the sweeper. 【Three-arm side brush】: Strong anti-tangle structure, close to the suction of the side brush, and the rubber arm has a golden tilt angle, effectively brushing the garbage into the main brush. Grinding nylon bristles with good hardness, the side brush will not scratch the floor and furniture, which greatly ensures the safety and cleaning