Advantages: The carbon brush cuts smoothlyThe copper wire is tight and does not easy to fall offHigh wear resistance, good reversing performanceGood conductivity, heat conduction, lubrication performanceCertain mechanical strength, long service life Note: In order to fit your power tool or other types of equipment, please check the carbon brush size before ordering. How to use it? The carbon brush is used on the commutator or slip ring of the motor as a sliding contact to lead in the current. It is clamped on the metal bracket and pressed onto the shaft by a spring. Notice: If you replace the carbon brush with a new one, it is found that the carbon brush has been worn or half worn within a few minutes or hours of use, indicating that your shaft rotor is in off-normal working state, and you need to replace the shaft rotor in time.