Features 1.Restores life to your electric motor tool. 2.Carbon brush is an item easy to wear and tear, this set is a good replacement. 3.It is convenient to replace the carbon brush. 4.Conductive, thermal conductivity. 5.Suitable for an electric motor or generator to function, the coils of the rotor must be connected to complete an electrical circuit. Specification Features: Restores life to your electric motor tool. It is convenient to replace the carbon brush. Conductive, thermal conductivity. Carbon brush is an item easy to wear and tear, this set is a good replacement. Suitable for an electric motor or generator to function, the coils of the rotor must be connected to complete an electrical circuit. Specification: Material: Carbon Type: 103 Weight: Approx.78g/ 2.8oz Size: Approx.6*10*15mm/ 0.2*0.4*0.6in Package List: 20 * Carbon Brush Note: Please allow slight error due to manual measurement. Thanks for your understanding. Package List