Milwaukee® Carbon Brush Assembly is designed for grinder, 4 1/2" & 5" sander-grinder, band file, shear, jigsaw orbit sander, random orbit sander, nibbler, 5.5 A 5" random orbit sander, ga shear, D.I. grinder, variable speed jigsaw, top knob jigsaw and 10 & 16 ga nibbler.