eBay

The

(Part No. 194992-4 or 191957-7) is a common replacement part designed for heavy-duty Makita power tools, particularly large angle grinders and demolition hammers. These brushes feature an auto-cut-off (auto-stop) function that automatically stops the motor when the carbon wears down to a certain point, protecting the armature from damage

Top Compatible Tool Models

This set is compatible with a wide variety of 7-inch and 9-inch grinders and large hammers:

Angle Grinders: 9027, 9029, 9047, 9049, 9067L, 9069, 9077, GA7011C, GA7020, GA7021, GA7040S, GA9020, and GA9040S.
Hammers & Breakers: HM1303, HM1304, HM1500, HM1800, and HM1810.
Other Tools: 2414B/NB (Cut-Off Saws), 3612/C (Routers), and SA7000 (Sanders/Polishers).