i have a 14.4v ryobi and in first gear itll take a lot of stuff off
But for real its invaluable if your trying to do something fast. I used it to change spark plugs in my altima before work in like 2 mins. pointless but anyways...
I dunno how much i would rely on a battery powered impact wrench. Esp made of plastic. Do they last long? im guessing snap on knows how to build tools better than me though so il leave it alone