I dunno...................
We had this debate a while back. There were many reponses to it and I stated that I had an electric impact wrench. The one that Antonye mentioned earlier sounds just like mine.
The thing is, quite a few people seemed to state that this was crap and carried on with there old iron bar and socket routine. I cant see the point!!
I got mine from fleabay, brand new for a tenner. I think that they are available from Halfords and B and Q etc. I would never go back to that iron bar again. Its great for undoing and doing up the rear nuts on the sprocket and wheel side. No bouncing bike. No needing a mate to hold the bike. No slipped hands and scuffed knuckles or paintwork!!!!!!
The only thing I would say that I have to be carful of draining the bike battery when using it a lot but that is only cos the battery is on its way out at the moment.
Bloody good bit of kit.
You pays yer money......................................
DC.
[Edited on 30-3-2005 by DC]