There are very few things we find more frustrating than starting what should be a simple part swap, only to snap off a bolt. That's an automotive lesson some of us have learned the hard way. What ...

The only term I can think of is hand-held impact driver...It's like a screwdriver with a (maybe) a 3/8" socket...You put it on a bolt, usually one that's stuck or stripped/stripping...Whack it with a ...