Compatibility: The replacement parts are compatible with Ecovacs Deebot 500 / 600 / 601 / 605 cleaning robots. (Please check your robot model before purchasing.) High Performance: Quick and effortless snap-on replacement. No tools required, easily replaceable filter and side brush. Maintenance: Keep your robot running at maximum power by changing the replacement part every 2 to 3 months depending on the frequency of use. Pack of 6 filters (6 high-performance filters + 6 sponges), 6 side brushes. If the brushes are bent due to shipping, you can soak them in warm water for a while.