brake adjuster... thingamajig... whatchamacallit... do-dad... Yeah...
that's it! 
My buddy with a 94, borrowed "a special tool" from our CC dealer, and come to find out, there
are misc. sockets to fit it,
It's been 3 years since I/we did his brakes, so the "torx" may not be correct! at least, that's what I thought it was!
