caliper bolt socket size front disc pads on 2008 Ford Escape

i tryed to change the front brake pads and can't get the right socket size .I did try 3/8";10 metric and too big and then 5/16"&8 metric and too small

by in Austin, TX on December 11, 2010
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1 answer
ANSWER by , July 03, 2011
it is a 9mm allen socket