General description For Combo J7+ Main Side Brush Hepa Filter Dust Bag is made from new, high-quality materials that are well-crafted and highly compatible with the original equipment. These clean accessories enable your home robot to maintain optimal performance while effectively reducing dust, pollen, and other allergens from the air you breathe. Technical specifications Material: Plastic Package Contents: 1 set main brush, 4 x side brushes, 4 x filters, 4 x dust bags, 1 x cleaning brush Measurement allowed error: +/- 1-3 cm Usage To achieve the best cleaning and filtration effect, it is recommended to replace the cleaning accessories every 2-3 months, depending on the frequency of use. The sweeping robot filter functions to filter dust, dirt, and other impurities inhaled by the robot, ensuring it remains clean and operates normally. Additionally, the filter prevents dust and dirt from entering the robot's motors and other components, thereby extending its lifespan.