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. Vacuum cleaner accessories are of high quality. It is made of high-strength and environmentally friendly materials. 5. The accessories are easy to remove dirt, dust, and trash in corners and edges effectively. Especially your hair and your pet's hair. Accessories parts are and easy to install, Make your robotic vacuum cleaner and longer. Applicable Models: for - RoboVac 11S for - RoboVac 11S Plus for - RoboVac 30 for - RoboVac 30C for - RoboVac 12 for - RoboVac 15C for - RoboVac 15T for - RoboVac 25C for - RoboVac 35C color:As shown Material:plastic Package Contents: 2 x roller brush 4 x side brush 4 x hepa filter 1 x primary filter 1 x