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. GENTLE YET EFFECTIVE: Our roller brush bristles are soft to the touch, perfect compatible cleaning a variety of surfaces while ensuring a thorough clean without damaging your floors. 3. Durable Materials: This accessory is made of durable materials and can be washed and reused. This design ensures long-lasting per compatiblemance and reliability when facing various cleaning challenges. 4. Easy and Quick Installation: This accessory is designed compatible Xiaomi Mijia Pro B402HW B402CN. 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 function, these accessories can ensure that your vacuum cleaner operates at optimal efficiency and save you potential expensive maintenance costs. Function: Consumables Use environment: Home use : Material:plastic Package Contents: 1 * Roller brush 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.