This carbon brush set replaces Dewalt P/N 949646-01 and 949646-02. Worn brushes frequently are the cause behind a motor running poorly. Replacing brushes can fix a motor that’s operating intermittently. New brushes can restore a motor’s electric braking. Carbon brushes are one of the most commonly replaced power tool parts. This is because carbon brushes are wear items meaning that through friction and use they will gradually wear away until they need replacing. Worn brushes are a common causes of intermittent motor function reduced electric braking and reduced motor power. A worn-out brush will often be worn down near to the wire lead and can be cracked pitted or burned. When replacing carbon brushes be sure to inspect your armature for burns cracks or other damage which can indicate larger motor problems. Dimensions (LxWxH): 0.59 x 0.39 x 0.24 Compatibility: This part is compatible with the following machines: DeWALT DW458 Type 1 Angle Grinder DW814 Type 1 Angle Grinder DW814 Type 2 Angle Grinder DW824 Type 1 Grinder DW824 Type 3 Grinder DW824 Type 4 Grinder DW824 Type 5 Grinder DW827 Type 1 Grinder DW827 Type 2 Grinder DWM120 Type 1 Band Saw DWM120K (Type 1) Deep Cut Band Saw Black and Decker G850 Type 1 Grinder G850 Type 2 Grinder FS6500AG Type 1 Grinder QP650 Type 1 Grinder TV810 Type 1 4-1/2 Angle Grinder TV810 Type 2 4-1/2 Angle Grinder G850GW Type 2 6.5 Small Angle Grinder 27325 Type 1 4-1/2 Small Angle Grinder 2752 Type 1 Small Angle Grinder 2753 Type 1 Small Angle Grinder 11651 Type 1 4-1/2 Small Angle Grinder DW827 Type 1 6In. High Power Sag DW827 Type 2 6In. High Power Sag TV810K (Type 1) 4-1/2 Angle Grinder Kit TV810K (Type 2) 4-1/2 Angle Grinder Kit Carbon brush 1(pair)