Makita CB-440 Replacement Carbon Brush Set for Most Makita 18v Cordless Tools
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. These carbon brushes work with:  BDF452HW Drill / Driver, BHP451 Drill / Driver, BDF451 Drill / Driver, BTD130FW Impact Driver, BTP140 Hybrid Impact Hammer Driver Drill, BTD140 Impact Driver, BTD142HW 18V Compact Lithium-Ion Cordless Impact Driver, BTW251 18V LXT Lithium-Ion Cordless 1/2" Impact Wrench, BHP452 18V LXT Lithium-Ion Cordless 1/2" Hammer Drill-Driver, BTD141 18V LXT Lithium-Ion Cordless Impact Driver, BTW253 18V LXT Lithium-Ion Cordless 3/8" Impact Wrench, BJS130 18V LXT Lithium-Ion Cordless 18 Gauge Straight Shear, BDA350 18V LXT Lithium-Ion Cordless 3/8" Angle Drill, BFS450 18V LXT Lithium-Ion Cordless Drywall Screwdriver, BFR750 18V LXT Lithium-Ion Cordless Autofeed Screwdriver, BHP454 18V LXT Lithium-Ion Cordless 1/2" Hammer Driver-Drill, BDA340 18V Angle Drill, BDA350Z 18V LXT Lithium-Ion Cordless 3/8" Angle Drill, BDF451Z Cordless 1/2" Driver-Drill, BDF452 Cordless 1/2" Driver-Drill, BFR750Z Cordless Autofeed Screwdriver, BFS450Z Cordless Drywall Screwdriver, BTD141Z 18V LXT Lithium-Ion Cordless Impact Driver, LXFD01CW 18V Compact Lithium-Ion Cordless 1/2" Driver-Drill, LXFD01 18V LXT Lithium-Ion Cordless 1/2" Driver-Drill, LXFD01Z 18V LXT Lithium-Ion Cordless 1/2" Driver-Drill, and LXSF01 18V LXT Lithium-Ion Cordless Drywall Screwdriver.  It is possible that these brushes work with other models not listed.  Check your tool manual for compatibility.