Featuring a robust Marathon Motor that increases the grinder’s reliability by 5 times the output the Metabo grinders are also long lasting due to their dust protection technology. This technology adds to the unit’s longevity by pushing any particles that may try and eventer the unit forcibly out as well as covering openings securely while not interrupting airflow. Making these hand grinders able to be used for any task anywhere with the key features of; varying wattage and able to be used in any location that has a standard 120 volt outlet. The varying wattage is different from unit to unit allowing you to pick out the exact power that you need for the exact task you need it for as well as, as mentioned above, the ability to plug this unit into any outlet that has the standard voltage of the US makes these units able to be used anywhere you need them to be. Allowing for you to get the perfect finishes, polish, smoothing, gouging, and/or shaping possible with any kind of metal you may come across.