General description Replacement Main Brush, Side Brush, and HEPA Filter set designed for Ecovacs N8, N8Pro, T8, T8 AIVI, and T9 Robot Vacuum Cleaners. Made from high-strength, environmentally friendly materials, this set ensures optimal cleaning performance while reducing the penetration of dust, pollen, and other allergens into the air. Technical specifications Material: Plastic Color: As shown Allowed measurement error: +/- 1-3 cm Package Contents 2 x Rolling Brush 8 x Side Brushes 6 x Filters 4 x Cleaning Cloth 1 x Cleaning Brush Usage It is recommended to replace the brushes and filters every 1 to 2 months to maintain optimal cleaning performance.