<VV> special screw? + tool

[Chris & Bill Strickland]

An impact driver is not the same thing as an impact wrench -- instead of 
air or electricity, you hit it with a hammer. available at tool sellers 
and motorcycle shops everywhere -- buy one the same time and place you 
get the bits, aka butterfly head.

Buy more than one bit in case you figure out they aren't as strong as 
your hammer blows. Clean out the socket so the bit seats to it's full 
depth.  And don't forget your fav penetrating lube.

http://en.wikipedia.org/wiki/Impact_driver

http://www.sears.com/shc/s/p_10153_12605_00947641000P

Bill Strickland