General description Replacement Part Main Brush Side Brushes HEPA Filter Compatible for IRobot Roomba S9 Vacuum Cleaner Accessories are designed to enhance the cleaning performance of your vacuum. Made from high-strength, environmentally friendly materials, these accessories help reduce the penetration of dust, pollen, and other allergens into the air you breathe. Technical specifications Material: Plastic Color: As shown Allowed measurement error: +/- 1-3 cm Package Contents 2 x Rolling Brush 4 x Side Brushes 4 x Filters 4 x Dust Bags Usage It is recommended to replace the accessories every 1 to 2 months to maintain optimal cleaning performance.