http://www.kk.org/cooltools/archives/000723.php

Hand held, hammer powered impact tool.

No tool box should be complete with out one. Put a 3/8 drive socket type tool ( socket, allen, torx or what ever ) on the end, select rotation direction, put on bolt and smack w/ a hammer and the stubborn ( pain in the *** ) bolt comes out. Takes mere seconds ( less than a beer anyway ) to remove a frozen bolt / screw. Even breaks loose bolts with loc-tite.

Been using for YEARS and never encountered a bolt ( 3/8ths and smaller ) that would not give it up to this little wonder tool.

Hopes this helps all out there w/ stubborn bolt syndrome.

 

Yep an indispensible tool for sure!!

 

Hmmm might have to try it out.

 

It's great for those stubborn Torx head derby cover screws.

 

I bought one of those about 30 years ago, when I was too poor to afford air tools. I still find places to use it; like torz and phillips head fastners.