TEMO #308 Anti-Theft Wheel Lug Nut Removal Key 3440 Compatible for Mercedes Benz One piece anti-theft lugnut key on selected veihcles. Match key pattern to the locking lugnuts on your vehicle. We don’t have selection chart as lugnuts may be different even on the same car model by design for security reason. Line up socket with nut tightly; turn counter-clockwise to loose nuts. Not for use with impact wrench.