High-quality materials, sturdy and . Carbon brush is a item easy to broken when it working. Replacement carbon brush easy replace the spoiled . Conductive, thermal conductivity. For an electric motor or generator to function, the coils of the rotor must be connected to complete an electrical circuit. 4pcs Power Tool Accessories Carbon Brushes for CB-415 CB-417 191955-1 Suitable for 6905H 6904vh for HP1030 6402 for HP1300S HR2400 HR2400K Electric Wrench Note: Installation guide not included, Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:As Shown Material:Plastic Package Contents: 4 * Carbon Brushes Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia