Creat for removing stubbon stains and oxides from hard to reach places, or textured cast pieces. It is vital that these wire brushes be used in a safe enviroment with goggles and an apron. The tiny wires WILL fly off and stick in you like tiny needles. Hence a non fabric apron and full goggles are vital. Be carefull to of anyone else working near you.I reccomend the use of low speeds and light toutches. To high and youll end up with a face like a hedgehog.