It's 85% carbon and says "Don't press, just grab the metal and cut!" Well when I broke the 10mm machine screw I made a hole that the gear my BMW stopped, I had to try the "easy exit" to get the screw out and then I managed to break the light screw on top of the machine screw. I knew I had to buy something with more carbon and this was my best bet, but it was so brittle it snapped off too - it's just as well the bolt hole was already filled or I would have just ripped it apart, nice car because i was ready to kill myself! (not literally)!