Compatibility: suitable for Dreame F9, also suitable for Mijia 1C (please confirm your robot vacuum cleaner model before purchasing) Makes fresh air: easy to handle footprints on the floor , juice residue, oil stains, etc. It can help you provide fresh air and a healthy living environment. The filter can maintain the cleaning performance of the broom while reducing the ingress of dust, pollen in the air Strong cleaning performance: the roller brush can adjust the rotation, sweeps the dust in the dust box, and prevent hair from tangling. The side brush has stronger cleaning power, can go deep into corners and edges to remove more dirt, dust and debris. Easy to remove dirt, dust and debris from corners and edges. Especially your hair and pet hair Easy to replace - High quality product. The vacuum cleaner accessories are made with very resistant and environmentally friendly materials. Replacement parts are easy to install and save a lot of time, very convenient to remove and replace for regular maintenance Tips: If the brushes are bent due to shipping, collect them by simply soaking them in hot water for a while. Regularly replacing accessories will also improve the cleaning performance and suction of your sweeping robot. It is better to replace the spare parts every 2-3 months to keep the machine working at its best performance