General description Laser Tools Wheel Nut Wrench Set 4pc 7037 is designed specifically for hand tightening of wheel nuts, helping to prevent cross threading. This set should be used prior to employing standard wheel nut sockets for final tightening. Technical specifications Standard profile sizes: 17mm, 19mm, 21mm Length: 145mm Special profile for Mercedes-Benz: 17mm Material: Chrome Vanadium Features: Magnetic with alloy wheel protection sleeve