Hillman Carbon brushes conduct current between stationary wires and moving parts, most commonly in a rotating shaft. Commonly used in electric motors, alternators, and electric generators. Use as replacement parts for Black & Decker and Dewalt power tools. Made of high-quality graphite and copper materials. The material offers strong resistance to rust and corrosion. Dimensions: 1/2″ x 1/4″ x 13/16.