I've got a 1/2 inch Milwaukee electric impact wrench. Airs better, but that thing rocks.
Especially if you have a long bolt or nut that starts getting tighter as it comes off.
Its got a rocker switch that turns it off and on and also controls direction.
Squeeze it at the top it tightens, bottom, it loosens. I can run a nut or bolt back and forth so fast you would not believe it.
BTW, I don't think I have ever posted this on this forum. I try to do so whenever I am on a auto repair type forum.
Don't get suckered into buying a 12 volt impact wrench.
Several years ago, my father was getting worried about getting a flat tire when off fishing.
He was in his 80s, and figured he could handle the tire OK, but breaking the lugs loose and jacking up the truck might give him a problem.
So, I bought him a 12 volt electric/hydraulic jack.
It worked great.
Then, I bought a 1/2 inch 12 volt impact wrench from some catalog. Came with sockets and a case.
Fortunately, I figured I would try it out first.
I'm not sure I can get across what a huge POS this was.
It had a small motor, which spun a weight inside the housing.
When you pulled the trigger, it would start spinning up.
After at least 5 or 6 seconds of getting faster, a release would trip inside. That would disengage the weight from the motor, and cause it to engage the output shaft.
The weight would hit once and only once with a loud bang..
Then, the whole process would start over again.
You look at the specs of a regular impact wrench, you will see how many blows per minute. Usually in the hundreds.
If you were lucky, and had a good hot battery, you might get 10 weak blows per minute!
Plus, since the motor was never coupled to the output directly, it would not spin a nut off after it got loosened.
Just for fun, before I left it in the back of my truck and got someone to steal it, I loosened a lug, and put it on it.
Two minutes to turn the loose lug one revolution.......
You have been warned.
And to the guy who finally stole it after I left it back there for a week.....Karma's a bitch<G>.
J.