a few pointers on the hexagonal socket head cap screws with a smooth surface
I will be the first to admit that when using the left hand drill, I do not always have the best of luck, but despite this, we are going to keep trying to see if we can force it out. You can see that pliers are a good choice. Other methods may include the use of the channel lock, and the channel lock can be made in another way, which may be a pair of good vice with a very good new tooth locked...
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