General description New, high-quality materials ensure that this Main Brush Side Hepa Filter Mop is well-made and highly compatible with the 1790 Ultra equipment. Clean accessories enable your home robot to maintain optimal performance while effectively reducing dust, pollen, and other allergens from the air you breathe. The cleaning accessories are easy to remove and replace as part of routine maintenance, ensuring the best cleaning and filtration effect. Technical specifications Material: Plastic Package Contents: 1 x Main brush 4 x Side brushes 4 x Filters 2 x Mop Cloths Measurement allowed error: +/- 1-3 cm Usage To achieve optimal cleaning and filtration, it is recommended to replace the cleaning accessories every 2-3 months, depending on usage frequency. The filter functions to capture dust, dirt, and other impurities inhaled by the sweeping robot, preventing them from entering the robot's motors and extending its lifespan.