General description Replacement parts for Ilife A4, A4S, A40 robotic vacuum cleaners, and Ecovacs CEN550. These high-quality accessories are made from durable materials and are perfectly matched to the equipment, ensuring optimal performance. Regularly replacing these components helps maintain the vacuum's efficiency and improves air quality by reducing allergens. Technical specifications Model: For A4, A4S, A40, For CEN550 Robot Vacuum Cleaner Material: Plastic Color: As shown Package Contents: 2 x Main Brush, 1 x Primary Filter, 3 x Filters, 6 x Side Brushes Measurement allowed error: +/- 1-3 cm Usage Replace cleaning accessories every 2-3 months depending on usage frequency. The HEPA filter improves air quality and reduces particle size by up to 99.97%. Helps eliminate household dust, pet dander, and unpleasant odors from pets, smoke, and cooking fumes. Other information Light reflection and different displays may cause the color of the item to differ slightly from the actual