Part # ;N039389 N558583 N408735 622437-00. Compatible with D28700 Type 1, D28700-AR Type 1, D28700-B2 Type 1, D28700-B3 Type 1, D28715 Type 1, D28715 Type 2, D28715 Type 3, D28715X Type 2, GR870 Type 1, GR871 Type 2, GR871 Type 3. These carbon brushes makes sure your motor runs properly, and fixes a motor that operates intermittently. A brand-new, unused, unopened, undamaged item in its original packaging.