"Mark" wrote in message
...

"Roger" wrote in message
k...
The message
from "Dave Plowman (News)" through a haze of
senile flatulence wrote these words:

I see these in the Screwfix catalogue, Impact Drivers. Anyone know
what
that is? Does the drill hammer? Is it just a drill/driver without a
chuck? What is the advantage? Also, Drywall Drivers, also in
Screwfix,
what do they do over a drill/driver? If a tool can save me time,
effort
and produces a better quality job, then I am always interested.

An impact driver is usually a screwdriver which can take a variety of
bits
or sockets and has a cam mechanism within. It's purely mechanical. You
engage it on the screw or nut and whack it with a hammer. Most commonly
used on cars rather than houses.

Until drivels brother posed the question I thought such information was
common knowledge. ;-)

seems half you lot are confusing two very different tools, and the
intended
use.

Impact drivers

Building/construction

screwfix

http://tinyurl.com/a3yw7

Mechanics automotive tools

screwfix

http://tinyurl.com/7asw8

This is a good desciption:
http://tinyurl.com/9htyt