"Dave Plowman (News)" through a haze of senile
flatulence wrote in message ...
In article ,
Mark wrote:

It is a screwdriver for tightening and loosening extremely tight
screws, often used in engineering and mechanical trades.

Its not In this case..
Cordless impact drivers have been used in the construction industry for
years, primarily for erecting steel stud wall or anything that required
large screws driven into a hard materiel quickly, a conventional
drill/driver is next to useless in comparison.

They may well have been. But if you went into a decent tool shop and asked
for an *impact driver* you'd end up with the type you whack with a
hammer...

You wouldn't.