This is the only powered wrench that automatically stops when it reaches a factory-set torque without harming bolts, breaking screws, or deforming tire rims. Suitable for over 95% of today’s vehicle recommended torque settings, the wrench is ideal for those unsure of how much they should tighten lug nuts on a spare tire because it shuts off automatically when a lug nut is tightened to 110 foot pounds. When loosening an over-tightened lug nut (due to a service station’s air wrench), the device applies 250 foot pounds of torque. Convenient and easy to use, it plugs into a car’s 12-volt power socket, provides a 12' cord that enables access to all four tires, and each pull of its trigger lights a built-in LED for nighttime roadside repairs. Includes two double-ended chrome vanadium sockets that fit 1 1/16", 3/4", 1 3/16", and 7/8" lugs or bolts. 7 1/2" L x 3 1/2" W x 7" H. (5 1/4 lbs.)