Feature 11. Compatibility: This roller brush is compatible with Roborock S7, compatible with Roborock S7+, compatible with Roborock S7 MaxV, compatible with S7 MaxV Ultra, compatible with Roborock T7S T7S Plus robot vacuum cleaner. 22. Easy to replace: Snaps into place for quick and easy daily replacement. Easy to replace main brush without tools. 33. Routine maintenance: The brush roller is made of environmentally friendly materials, it is recommended to replace the multifaceted brush roller every three months to improve suction and performance and extend the life of the robot vacuum cleaner. 44. Reusable: Easy to clean hair and debris from the brush. Rubber brushes are made of high-quality, durable materials that can be washed and reused. (please dry completely before installation)Material: SiliconeColor: pink, purple, blue, yellowSuitable for: beginners, makeup expertsProduct size: approx 11.7*5.9*1.2cmPackage listPackage list 1:1*Main brushNoteDue to lighting effects and shooting angles, there are color differences in the product, please understand.Due to manual measurement, there is a tolerance in product size.