1. Clean brushes keep your home robot at best performance. The side brushes are easily removed and replaced as part of normal maintenance. 2. Filters maintain the cleaning efficiency of the robot while reducing the ingress of dust, pollen and other allergens to the air you breathe. 3. For best results, filters should be replaced every 2 to 3 months. Vacuum cleaner accessories are of high quality. It is made of high-strength and environmentally friendly materials. 4. The accessories are easy to remove dirt, dust, and trash in corners and edges effectively. Especially your hair and your pet"s hair. 5. Accessories parts are durable and easy to install, Make your robotic vacuum cleaner and longer. Compatible with Models: Q7 Max Q7 Max+ T8 Material: plastic colour: As shown Package Contents: 2 x roller brush 4 x side brush(Black) 4 x hepa filter 4 x mop cloth 4 x dust bags Only the above package content, other products are not included. Note: Light 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.