•Timely replacement of parts can improve cleaning efficiency and protect the engine. The recommended replacement period is 3-6 months •Main material: Nylon brush can help you solve most cleaning problems, and HEPA filter can effectively help the vacuum cleaner to collect dust •About accessories: The size of the detachable main brush is the same as that of the classic moderator •Since both sides are detachable, it is easier to clean •The pentagonal side brush is also very effective for cleaning carpets, wooden floors and tiles Specification: •Material: nylon •Applicable models: for Xiaomi Mijia 1 / 1S Roborock S6MAX S6PURE S6 S5MAX S5 S4 E4 E35 E2 Compatible with: •Xiaomi Mijia 1 •Xiaomi Mijia 1S •Roborock S6 Pure •Roborock S5 Max •Roborock S5 •Roborock S4 •Roborock E4 •Roborock E35 •Roborock E2 •Roborock S6 MaxV Package included: •1 x Cleaning Brush