Improve cleaning efficiency: The replaced roller brush bristles stand upright without hair entanglement or dust buildup, allowing tight contact with the floor for efficient dust and debris pickup. Extend machine lifespan: Avoid the increased resistance caused by debris entangled in the old roller brush, reducing overload wear on the motor, bearings, and drive belt, allowing core components to operate under low load and lowering the likelihood of malfunctions. Restore suction and save power: The replaced roller brush ensures smooth airflow, enabling the vacuum to perform at its original suction power without increasing the suction setting. Cleaner and more hygienic with no secondary pollution: Old roller brushes tend to harbor dirt and grime that can fall off during cleaning, while the replaced brush leaves no residue. Compatible For Lefant ，M2P/M3