General description Brand new, high-quality material, well-made, and well-matched to the equipment. Clean accessories keep your home robot running at its best while reducing the infiltration of dust, pollen, and other allergens into the air you breathe. To achieve the best cleaning filter effect, cleaning accessories should be replaced every 2 to 3 months depending on the frequency of use. Technical specifications Color: As shown Material: Plastic Package Contents: 2 Pairs x Main Brushes 11 x Side Brushes 10 x Filters 2 x Cleaning Brushes Measurement allowed error: +/- 1-3 cm Usage HEPA filters can greatly improve air quality by reducing particle size by up to 99.97%. Helps eliminate household dust, pet dander, and odors from pets, smoke, cooking fumes, and various household products and chemicals.