Is your DeWalt angle grinder acting up, sparking a lot, or losing power? Chances are, the carbon brushes are worn out. This 4-pack of replacement brushes is exactly what you need to get it running like new again. They're made to fit DeWalt models DWE4011 (4.5-inch small angle grinder) and DWE4120 / DWE4120N (Type 1, 4-1/2 inch small angle grinder). These are high-quality replacements for part number A27343-4. Made from premium E-105 grade electrographite carbon material for good conductivity and longevity. Each brush measures about 6mm x 9mm x 19.5mm. Replacing worn brushes is a common and relatively simple fix that can save you from buying a whole new tool. Keep your DeWalt grinder in top shape with this affordable maintenance part. Pack of 4 means you have a spare set ready for next time!