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Breaker Bar
From WikiPedalia
An extension handle for a socket wrench, used to achieve high leverage and to loosen parts which have become corroded or otherwise are too tight to be loosened with an ordinary wrench. A breaker bar can be merely a length of pipe placed over the handle of a wrench, but only a non-ratcheting wrench should be used due to the risk of damage to the ratchet mechanism. There is still the risk of breaking a bolt, stripping a wench flats, or cracking the socket.
