Features It is conductive and thermal conductivity. It is suitable for an electric motor, the coils of the rotor must be connected to complete an electrical circuit. Replacement carbon brush for you easily replacing the broken one. It is durable in use. 100% Brand New and high quality. Features: 1. Replacement carbon brush for you easily replacing the broken one. 2. It is conductive and thermal conductivity. 3. It is durable in use. 4. It is suitable for an electric motor, the coils of the rotor must be connected to complete an electrical circuit. 5. 100% Brand New and high quality. Specification: Product Name: Carbon Brush Material: carbon Model: 044 Size: Approx. 7 * 17 * 18mm / 0.3 * 0.7 * 0.71in Weight: 121g / 4.3oz Package list: 20pcs * Carbon Brush Note: 1. Please allow a little biterror due to manual measurement. Thanks for your understanding. Package List