Dave Plowman (News) typed:

Of course Screwfix may mean something else - if so a reference would
help.


I've got a 12 volt one which runs off the car battery. Can be useful
for some things, although it's really meant for loosening wheel nuts
after Kwik-Fit have been at them with their air tool set on kill.
Didn't cost anything like 250 quid, though.

NO. what you have is a 12v cigar lighter plug-in one of these
http://tinyurl.com/8a45q
A different tool completely, this is called an Impact Wrench.
Notice the 1/2 square drive.
the small battery Impact Drivers have a 1/4 _HEX_ drive to take a driver
bit.
FFS even Drivel know more about this then you.


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