WaganEL2257 12V DC Mighty Impact Wrench, 1/2 inch 12 Volt Electric Impact Wrench Kit, 271 ft-lbs, Tire Repair Tools with Sockets and Carry Case

Works well for the occasional tire change. would not recommend for a full-time auto shop though

How to use this Impact wrench!!! I learned a lesson today, the impact wrench WILL NOT WORK work if you PUSH into the bolt you are trying to remove!!!! Instead put the socket on the bolt securely, then squeeze the trigger. The unit will spin up then go clank!, To remove my tire lug, I had repeat this 6x but each time I saw the lug turning. NOTE: if you use this on a flat, clank it 3x per lug then jack your car up a bit so the tire is either on the ground lightly or above ground or use your tire lug wrench again with the tire off the ground. If you have the weight of the car on the flat tire, you could snap or bend the lug nuts and or damage your rim!!! This supposedly has about 100lb more torque than the Kawasaki which I purchased first, and I think it does have some extra power as the Kaw. did not loosen my lug at all, BTW I also noticed I pushed the wrench into my bolt for some reason and I thought I broke it.... Moral of the story, put the socket on the bolt/lug but do not push into or down into the lug/bolt.I learned the pushing stops it by trying to remove the bolt on my motorcycle fork (if you need to replace your seals this makes it a piece of cake)! I pushed down and nothing was happening, luckily I took pressure off and then it worked, that's how I figured it out!!! I bet most of the I didn't work people made the same mistake as I just returned the Kawasaki for the same reason!!!

I held off buying this product hoping someone else would finally write a review on it. After getting a tire blow out the night before and having trouble removing some of the lug nuts, I felt I could no longer wait and ordered this item the next morning. As soon as you take it in your hands you have that feeling that this is nothing more than a toy and it will not do the job. Much to my surprise it did take off 3 of my 5 lug nuts on one wheel and then it just quit working. This is a cheap,poorly made tool that you cannot rely on. You would be much better off purchasing a good four way chrome tire lug wrench and adding on a three foot pipe extention to it for more leverage. Thanks to AMAZON'S wonderful return policy I was able to send it right back for a full refund.

Finally had a chance to use this. Worked exceptionally well.Definently recommend. Easier then wrenching .

The device works, but not as effective as I would like. This 12V impact wrench best operated with car running to supply 14V to make this product work better. At one impact per second or so, it takes a few seconds to wack wheel nut loose. Bottom line, it works, but for practical reasons, if it takes time to deal with the cable and its hookup, and throw in the one impact per second operation, it is just too much fuss with little reward. Better to have a breaker bar and appropriate lug nut size socket to leave in car for more efficiency. The short ineffective lug wrench supplied with most cars easily compensated by a good long Craftsman breaker bar with appropriate socket. With no assurance of how tight the lugs are when reinstalling them, a real wrench is best used anyway after using this impact wrench. However, the item is a keeper for me as home mechanic to deal with certain suspension work and long reach hardware. I would not recommend this product to the average buyer eyeing this product as an alternative to normal methods.6/2012: Now comes a positive update. The tool is very useful when time comes to perform car maintenance beyond working at one wheel. When rotating tires, this impact wrench amplifies its advantage compared to single wheel work scenario. Rotating tires or removing multple wheels to perform brake work are times when this tool really shines. There is the need to use a breaker bar or torque wrench to tighten the lugs with proper torque. Counting number of impacts during tightening process may not generate consistent tightening torque from lug to lug. But this tool works!

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!

OK, I'm an engineer and this gadget surprised the heck out of me... not in a good way... in fact I returned the first one, convinced it was bad. I could hear the motor turn but the chuck didn't turn at all... then about every 2-3 seconds a loud BANG.Well, it turns out, that's how this works!!! The "impact" comes with each of those BANGS. It's strange but it seems to work. I wanted this to remove car tire lug nuts. It works on my 2014 Rav4. After about the 4th BANG, the lug nut is almost all the way off.Only 3 stars because it's a weird acting tool and I'm a bit concerned that the impact may be too much for certain uses and might cause damage.