I have had good luck with SK tools,  For my puposes are comparible
to snap-ons at 1/3 the price!    They call what you are looking for "triple-
square"  bit sockets

http://www.sktools.com/productcatalog.htm

On Thu, 15 Aug 2002 11:23:24 -0500, John Rodgers <
j_rodgers@CHARTER.NET> wrote:

>Can anyone tell me a good source for an 8 mm  internal 12 point
driver
>for the 12 point cap screws (Porsche) for the Vanagon CV's.
>
>My driver stripped its teeth this last go around. Bought the only one I
>could find and it was in a set of four. Cost me $16. Product made by
the
>Lisle Corporation. Said heat treated on the packaging. Guess that
meant
>it was laid on the stove at lunch time. Metal turned out to be soft.
>Gave up the ghost before I was able to complete the torque job at 33
>ft-lbs.
>
>Would appreciate any input. need to re-torque the bolts just to be
sure.
>
>Thanks,
>
>John Rodgers
>88 GL Driver