Quiet and Smooth Operation: Equipped with a precision axle structure, the brush head rotates smoothly and stably, generating low friction noise during work. It provides silent cleaning throughout the home, suitable for daily and nighttime cleaning scenarios. Waterproof and Easy to Clean: The brush head has excellent waterproof performance, is resistant to shedding or fraying when washed, and can be rinsed directly with water after becoming dirty. It dries quickly, making daily maintenance time-saving and worry-free. High-Strength, Stable Axle: Built-in reinforced solid axle provides sufficient support, ensuring high-speed operation without easy wobbling or deviation, preventing stuck cleaning and guaranteeing continuous, stable device performance. Scratch-Resistant Floor-Friendly Design: Brush bristles are softly and finely treated, with no hard edges or burrs, preventing scratches on wooden floors or tiles during cleaning, fully protecting home flooring. Main Brush Side Brush Filter Set，Compatible For Xiaomi，S40 OV81 Robot Vacuum Cleaner Replacement