General description Replacement parts compatible with iRobot Roomba S9 (9150), S9+ (9550), and S Series robot vacuum cleaners. These vacuum cleaner replacement parts are designed to maintain optimal cleaning performance while ensuring a safe and effective cleaning experience. Technical specifications Material: Plastic Package Contents: 2 x Main Brush 4 x Side Brush 4 x Filter Measurement allowed error: +/- 1-3 cm Usage It is recommended to replace the parts every 6-12 months for optimal performance. The filters help reduce the infiltration of dust, pollen, and other allergens into the air. Other information Note: Light reflection and different displays may cause the color of the item to differ slightly from the actual product.