Compatibility: Compatible with Hitachi power tools The carbon brushes are 6.5 x 7.5 x 13 mm in size and are easy to insert and remove. A built-in auto-stop function automatically cuts off power when the carbon brushes are worn to a point, preventing the motor from idling and damaging the barrel. Widely applicable: Suitable for angle grinders, orbital sanders, angle grinders, screwdrivers, impact wrenches, drills, impact drills, rock drills, polishers, hedge trimmers, metal shears, planers, jig saws, circular saws, milling machines, and routers 2 pairs of carbon brushes are packaged for easy replacement at any time, Manufacturer: OTOTEC