What's In The Box: 2pcs Main Brushes, 4pcs HEPA Filters, 4pcs Side Brushes with screw pre-installed, 1pcs cleaning tool. Compatible with Roborock S6 S6 Pure S5 S5 Max S4 E4 E20 E25 E35 C10 S50 Robot Vacuum To keep your Robot Vacuum running at peak performance, Please clean the filter once per week( twice per week in homes with pets) and replace it every 2-3 months. Please maintain the combo brush every month( every 2 weeks in homes with pets) and replace it every 5-6 months. Please maintain the side brush once per week( twice per week in homes with pets) and replace it every 3-4 months. The High-Efficiency HEPA Filter captures up to 99% dust, dirty, pet hair, and small particles. The Combo Brush superiorly pick up pet hair, dirt, dust, and debris and works well on floor types—hardwood, carpet, tile, and stone. The Side Brush helps you get deep into corners and right up against walls and base boards to ensure superior cleaning area. It is easy to be replaced and installed on your robot vacuums. Shipping with a brown box to prevent from being damaged in transit.