General description Keep your Xiaomi Dreame H11 / H11 Max vacuum cleaner operating at peak performance with this replacement roller main brush and HEPA filter set. Regular maintenance with clean brushes and filters ensures optimal cleaning efficiency while minimizing the infiltration of dust, pollen, and other allergens into your home environment. Technical specifications Applicable models: H11 / H11 Max Color: as shown Material: plastic Package Contents: 1 Roller Brush, 2 HEPA Filters, 1 Clean Brush Measurement allowed error: +/- 1-3 cm Usage For best results, it is recommended to replace the filters every 2 to 3 months to maintain optimal cleaning performance.