The Panasonic WEY7441L2579 Hammer Drill Motor Brush Assembly is a replacement component designed to maintain consistent electrical contact within compatible hammer drills. This assembly transfers electrical current to the motor’s rotating armature, enabling efficient power delivery and smooth tool operation. Over time, motor brushes wear down due to friction, and replacing them helps ... https://www.wholetoolbox.com/panasonic-wey7441l2579-hammer-drill-motor-brush-assembly