I don't know what it is, but breaker bars are amazing. They look just like a ratchet wrench with an extra long handle, only they don't ratchet. They will hold any size socket. But the trick in this tool is in the composition of the handle. The fact that it's longer gives you more leverage to loosen the offending nut or bolt, but the handle also flexes slightly, which works like magic to break those bolts. I know I'm going on and on, but it really is that amazing.
Check out a picture of a breaker bar.
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