[Applicable Models] The cleaning roller brush is suitable for replacing the Roborock S8/S8+/S8 Pro/G20 robot vacuum cleaner. Please confirm your vacuum cleaner model before purchasing. [Efficient Cleaning] The cleaning drum brush thoroughly and efficiently cleans the mop at a speed of 500 revolutions per minute to prepare it for cleaning the floor again. While cleaning, the brush pushes the dirty water from the floor to the water outlet, and then pumps the dirty water into the dirty water tank. [High Quality] The self-cleaning roller brush uses soft bristles made of special materials that protect the floor and are durable and wear-resistant. Damaged or old ones are a good replacement to keep your device working properly. [Washable and Repeatable] Because it is removable and washable, the brush is easy to maintain and remains effective for longer. For optimal performance, you can remove the brush every two months for cleaning. [Professional After-Sales Team] We attach great importance