I'm pretty sure the fronts are 9mm, and the rears are 7mm.

I think they did this on purpose because the brake system has to be put into 'service mode', otherwise you risk a caliper piston blowout while the caliper is removed.

By having goofy-sized hardware, it makes it that much more difficult for the average 'joe-schmoe' to mess with his own brakes without at least doing some research about it.

Even in my $30k+ tools at work, I didn't have anything this size.. and I'm too cheap to buy anything right now, so I ground down an old Torx bit and it fit the fronts perfectly. The rears accepted a different size Torx bit that I didn't even have to mess with.

One gallon of gas - $3.49

One used four wheel drive SUV that gets 30+ Miles Per Gallon - $15,999

Purchasing it used for $5000 UNDER bluebook because the dealership did not realize it was a hybrid - PRICELESS