What is the socket size for a 2006 Toyota Corolla belt tension pulley?

I'm trying to change the serpentine belt on my 06 Toyota Corolla. I don't seem to have the right size/type socket for the tension pulley. I believe that it is a torx socket (Or female star socket) but I'm not sure. Anyone have any idea what the correct socket is for said car?
What is the socket size for a 2006 Toyota Corolla belt tension pulley?
it takes a 19mm socket not a torx. and the other guy is right as long it is under 3years or 36k it is still under warranty
What is the socket size for a 2006 Toyota Corolla belt tension pulley?
If it`s a 06 why are you doing it yourself? It is still under warranty.

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