Each caliper is held in place by two socket head bolts. The bolts are a Number 45 Torx tip, and you must use a Torx bit to remove them. At the time, you may think an Allen wrench will work, but it won't and you'll end up stripping out the head of the bolt. Make the $6 investment and have the right tool for the job. There isn't a lot of room, and a Torx tip screwdriver will be tight, so we recommend using a socket bit for better leverage. We got ours at Sears.In the background of the top photo, you can see the damage done to our rotors. Once you lose the actual pad material from your brake pads, your rotors are toast because you're stopping your vehicle with a lathe. The front of the rotor is much thinner than the back, indicating the caliper wasn't sliding like it was supposed to, which accounts for the front pad wearing out before the back side pad. Check all four pads regularly.