Protect expensive wheels, wheel studs, and brake rotors with STEELMAN heavy-duty torque extensions. The STEELMAN 60165 1-Inch Drive Black 550 ft-lb HD Torque Extension is designed to prevent damage to wheels, studs, and brake rotors by reducing the risk of overtightening lug nuts which can result in sheared stud bolts, rounded lug nuts, and warped rotors. This 10-inch extension bar will, when used with an electric or pneumatic impact wrench, limit the effective output of the wrench to 550 ft-lb of torque and anything above that will cause the extension to flex and absorb the extra impact. This torque stick is made of resilient chrome molybdenum (Chromoly) steel that has a black powder coat to make it easy to pick out among other tools or in a crowded toolbox.