These are readily available at a FLAPS here, they are called Torx Tamperproof.

PerL
87 Syncro 112i

David Beierl wrote:

> I presume you're not actually looking at Torx drivers rather than
> hex?  There are lots of Torx applications just like you describe (covers on
> hard drives for example).
>
> david
>
> At 02:05 PM 1/22/2000 -0800, Dan Fleming wrote:
> >application for a peculiar tool. It is a set of hex male wrenches (like
> >allen wrenches) with a non-tamper feature that consists of a small
> >round  hole in the center of the hex. What I mean is that the wrenches
> >have a small hole in the center of the hex. The fastener would have a
> >dowel or post in the center of the opening. A standard Allen will not
> >fit, as without the hole in the wrench it will not fit.
>
> David Beierl - Providence, RI
>   http://pws.prserv.net/synergy/Vanagon/
> '84 Westy "Dutiful Passage"
> '85 GL "Poor Relation"