Compatibility : Suitable for Dreame D9 (please confirm your robot vacuum cleaner model before purchasing) Makes the air fresh : Easy to handle footprints on the floor, juice residue, oil stains, etc. It can help you provide you with fresh air and a healthy living environment Strong Cleaning Performance : The roller brush and side brush can help you effectively remove dirt and dust from the corners. The filter can filter dust and impurities, and achieve the effect of high efficiency and cleanliness Easy to Replace : Made of high-quality material, durable and practical to use. As part of normal maintenance, it can be easily disassembled and replaced Regular Maintenance : If the brushes are bent due to shipping, recover them by simply soaking them in warm water for a while. Regularly replacing the accessories will also improve the cleaning performance and suction of your sweeping robot. It is highly recommended to replace the spare parts every 2 to 3 months to keep the sweeping robot at