Compatible Devices: Compatible for Roborock S7 Maxv Ultra, S7 Pro Ultra cordless vacuum cleaners. Reusable: As it is removable and washable, it can be easily maintained and remains efficient for longer. For better performance, it is best to remove the brushes for cleaning every month. High Quality and Reliability: Made of high-quality materials for greater durability. Superbly manufactured, the parts are not original, but they are perfectly compatible with S7 Pro Ultra and S7 Maxv Ultra. Easy to Install: Quick and effortless replacement, simply remove your old main brush, then put the new roller brush in its place. No tools required, it is a good family tool to use. Kit Contents: 2 x Vacuum Cleaner Brush.