Weiler 3/8" Round Power Tube Brush is Ideal for cleaning and deburring smooth or threaded blind holes on stainless steel, aluminum, brass, bronze, copper, high-nickel alloys, inconel, pewter, platinum and titanium parts. 1/8" stem diameter for use on CNC/milling/automatic machine, drill, drill press, corded/cordless hand drill or cordless screwdriver. Features a single continuous length of stainless steel stem wire filled with a single spiral of crimped wire for a more flexible brushing action.