Compatible with: 100, 200, 275, 285, 300, 395, 410, and 595 (types 4, 5, and 6), also compatible with 6000 Contour Sander (types 1 and 2). Compatible with: MM3750, MM375, MM3950 (types 3, 4, and 5). Step 1: Open the carbon brush cover with the wrench. 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. The package includes 10 x carbon brushes. Because this brush is very small, sometimes it may fall out of the bag, or the number may not be correct. If you receive the wrong number of carbon brushes, please don't leave bad feedback immediately. Please get in touch with me for a return or exchange. Thank you very much. Product Size: 0.185 x 0.209 x 0.242 inch .
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