Feature:1. Suitable for miniature diaphragm pump motor.2. When the motor rotates, electric energy is supplied to the coil through the inverter, and its main component is carbon.3. Need regular maintenance and replacement, and up carbon deposits.4. There is a total of 100pcs, which can be used for a long time.5. This product has longer service life and better performance.Specification:Item Type: Carbon BrushModel: J420Size: Approx. 6 x 6 x 15mm / 0.24 x 0.24 x 0.59inScope of Application: Miniature diaphragm pump motor.w-e-text table td,.w-e-text table th,;.w-e-text table,Package List:100 x Carbon Brush