Description:2pcs Carbon Brushes Repairing Part for Rotary Tool for Dremel 4000Specification:Size: 6.3x4.8x8.4mmQuantity: 2pcsApplication: Suitable for Dremel 4000.Install method: Step 1: Use the wrench to open the cover of carbon brush. Step 2: Take out the carbon brush. Step 3:  Replace with the new carbon brush. Step 4: Use the wrench to lock the cover well.  Package Included:2 x Carbon BrushesMore Details: