Compatibility: V11 (3-pin drive, width: 50mm) (Please check your brush model and size before purchasing) Perfect replacement: Nice accessories to improve the performance of your vacuum cleaner. Effectively help remove more dirt, dust and debris, and provide a healthy and clean living environment for you and your family Durable material: The replacement parts are made of premium and environmentally friendly materials to ensure optimal performance and healthier lifestyle, durable in use, long service life Easy installation: Easy to remove and replace as part of routine maintenance. When the robot vacuum cleaner is working, clean and mop the floor to make the floor as clean as new Suggestion: To keep your vacuum cleaner operating at peak performance, please change the vacuum cleaner nozzle every 2 to 3 months