1. Enhanced cleaning efficiency: This roller brush has thick and soft main bristles that can deep clean the floor, effectively remove stubborn stains, and that no area is missed, ensuring that every area the robot passes through can be fully and carefully cleaned. 2. Innovative adjustable roller brush: Equipped with an adjustable roller brush, it can rotate to sweep dust directly into the dust box. This accessory can effectively prevent hair entanglement and maintain the cleanliness and efficiency of the vacuum cleaner. 3. dual counter-rotating extractors: These extractors are made of sturdy rubber with treads, which can expertly pick up and break down all types of floor dirt and debris. The design ensures long-lasting performance and reliability when dealing with various cleaning challenges. 4. Simple and quick installation: This roller brush is simple in design and can be quickly installed without any tools. It is an ideal solution to restore the vacuum cleaner to its best working