1. Clean brushes keep your home robot at best performance. 2. The side brushes are easily removed and replaced as part of normal maintenance. 3. Filters maintain the cleaning efficiency of the robot while reducing the ingress of dust, pollen and other allergens to the air you breathe. 4. For best results, filters should be replaced every 2 to 3 months. 5. For use with Xiaomi MI Robot only. 6. Vacuum cleaner accessories are of high quality. It is made of high-strength and environmentally friendly materials. 7. The accessories are easy to remove dirt, dust, and trash in corners and edges effectively. Especially your hair and your pet's hair. 8. Accessories parts are durable and easy to install, Make your robotic vacuum cleaner and longer. use for RoboRock S50 S51 S52 S53 S54 S55 S5 S5MAX S6 S6PURE S6MAXV for XIAOWA E2 E3 E4 for XIAOMI 1 1S color:As shown Material:plastic Package Contents: 4 x roller brush 8 x side brush 6 x hepa filter 4 x mop cloth Only the above package content, other products are not included. Note: Light shooting 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.