i was painting my calipers and I have lug locks on all four corners. I finished three of the four calipers, loosened all four regular lugs and lo and behold could not for the life of me get the lug lock of!! I even tried my 285ft-lb impact wrench and nothing. I had to drive to a local tire shop and have them use their impact wrench to get it off. Pissed me off. It took a total of like 8 hours to do my damn calipers, no thanks to the locks. Still won't go w/o them though. Peace.