[TR] posidrive vs phillips

[Chris Kantarjiev]

Don Spence wrote:
> Can someone please explain the difference? Can a phillips be moded to a 
> posidrive? Where are posidrive tools available?

I bought my Posidrive drivers from the Snap-On man, almost 20 years ago 
now. I bet you can find them elsewhere now.

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

The difference is the depth of the slots. The fasteners are (subtly) 
marked to indicate Posi vs Phillips.