Package Included: 2PCS N398321 Carbon Brushes for DeWalt Replacement Brushes.
Replacement Part Number:N398321 N088403 N103593 N172018.
Fits Machine Models: DWP849 Type 1, DWP849X Type 1, DWP849X-B3 Type 1, DWP849X-BR Type 1 7/9" Polishers.
Dimensions (L x W x H): 0.41" x 0.27" x 0.54".
Note:Worn brushes are often the cause of a poorly running motor, new brushes can restore a motor’s electric braking.replace every 60 hours or the electric rotary tool over heating.