Review on Wagan EL2288 12V Roadside Impact Wrench, 1/2 Inch Drive, 258 Ft-Lbs Torque Power, Tire Repair Tools With Sockets And Carry Case by Drew Springer

I only tried it once as a test, so I can't comment on the long-term durability or maximum torque. But it worked as advertised out of the box, and easily and quickly took off lug nuts tightened to 76 ftl-bs with two impacts. Putting the nuts back on, two impacts tightened them to exactly 76 ft-lbs as well.Overall it seems well-enough made, though not heavy/commercial grade. But it definitely seems sturdy enough for occasional or emergency use. Which what got me looking in the first place. After getting a flat and being unable to remove even a single nut with a standard wrench (even hammering it!), the AAA guy showed up and used a similar device to have all the nuts off in seconds. And with this there is strain on your back!