front rotor and BRAKE pad bolts
 

what is the tool I need to remove the caliber bolts, and the rotor brace on a 2006 front breaks

14mm and 15mm sockets and a ratchet... here is a how to on front brakes:
https://www.chevyhhr.net/forums/how-tutorial-library-21/how-replace-rotors-pads-06-hhr-15226/

However, my car uses calipers on the brakes.

I don't know what caliber rifle you would use to break an HHR.:corny:

Okay, so I graduated from High School when you still had write papers by hand.

Check your PM.

I finally noticed this thread was in the "how to" forum. I moved it and corrected the spelling in the title.