1. Enhanced Cleaning Efficiency: With thick and soft bristles, this roller brush can deep clean floors and effectively remove stubborn stains, ensuring that every area the robot passes through is thoroughly cleaned. 2. Advanced Filtration Technology: The filter captures 99.97% of all particles as small as 0.3 microns, including dust, pollen and other , ensuring a cleaner and healthier environment in your home. 3. Materials: This accessory is made of materials and can be washed and reused. This design ensures long-lasting performance and reliability when facing cleaning challenges. 4. Easy and Quick Installation: This accessory is designed For 3930F/3933/V2/39999Z. It is simple to install and can be installed quickly without any tools. It is the ideal solution to restore your vacuum cleaner to optimal working condition. 5. Cleaning Recommendations: Regular cleaning and replacement of accessories can significantly extend the life of the device. By maintaining optimal functionality, these accessories can that your vacuum cleaner operates at optimal efficiency and potential expensive maintenance costs. Function: Consumables Use environment: Home use Colour:As Shown Material:plastic+cloth Package Contents: 1 * Roller brush 2 * Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.