Enhanced Cleaning Power: Old brushes tend to get tangled in hair and build up dust, so replacing them restores strong suction power for deep cleaning of floor stains. Protects floors: Worn out brushes can scratch floors, so the replacement brushes conform to the flooring material and minimize friction damage. Reduce Noise: Stuck old brushes can increase operating noise. Replacing the old brushes with new brushes will make the machine run more quietly and smoothly. Extend the life of the machine: poorly rotating brushes add to the burden of the motor, replacing them in time reduces internal wear and tear and extends the life of the vacuum cleaner. Compatible For Eufy，Compatible For RoboVac， L35