Cheapest replacement carbon brushes for Challenge (Argos and Homebase) drills, grinders, sanders, planers, multitools, and other power tools Will fit most drills, saws, angle grinders and other smaller hand tools, Actual size is 1/2" W x 1/4" D (12mm x 6mm) and usually 11/16" long although the length isnt that important if not an exact match email us with whatever size you require