What size metric hex key do I need to release the caliper on an '03 325xi to change the brake pads?

I'm talking about the bolts on the caliper that are being covered by the tiny rubber boots.
What size metric hex key do I need to release the caliper on an '03 325xi to change the brake pads?
http://www.sears.com/shc/s/p_10153_12605鈥?/a>



It should be 7mm.



http://m3.madrussian.net/diy_front_brake鈥?/a>
What size metric hex key do I need to release the caliper on an '03 325xi to change the brake pads?
I'm not exactly sure what size it is but if you have A Harbor freight close to where you live which is a place that sells tools cheap. They have Sets of those for under $10.