Product Description: 1. Clean brushes hold your place robotic working at top performance. 2. Side brushes are clean to remove and update as part of recurring maintenance. 3. Filters preserve robot's cleansing performance whereas lowering infiltration of dust, pollen and varied allergens into the air you breathe. 4. For excellent results, filters needs to be changed every 2 - three months. 5: The size in the photograph is guide measurement, there could be a deviation of plus or minus 1-3cm Compatible With: - Roborock Q7 - Roborock Q7+ - Roborock Q7 Max - Roborock Q7 Max+ - Roborock T8 - Roborock Q7 Plus - Roborock Q7 Max Plus Package Included: Please favor the number of item according to your dreams