
There are many bad and mixed reviews on this product. I'm an aircraft mechanic and this REALLY works. I don't use anything else. Of course there are screws that won't come out with use, but this stuff doesn't guarantee that they will come out. A lot depends on the screw/screw condition and the user. Let me tell you, on a professional level, this thing helps me get out 95% of the stuck screws I encounter. I won't use anything else.

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