●FOR RS550 MOTOR: This carbon motor brush is applicable to RS550 motor, the carbon brush with holder assembly ensures perfect matching and stable working. ●SUITABLE FOR: RS550 carbon motor brush can be widely applied to driver, electric drill, electric screwdriver and many other tools, very useful. ●HIGH WORK EFFICIENCY: Works with good reliability under high speed, the carbon motor brush also enables high work efficiency. Its ideal replacement for your old or worn part. ●SIMPLE INSTALLATION: This motor is solidly constructed and to install in numerous applications. Designed to have a compact size and a light weight as well, the installation can be quickly finished. ●HIGH QUALITY MATERIAL: The application of premium ABS and aluminium alloy material brings excellent durability for long using.