Help!! Coolant crossover plug broken!, need way to remove

Cobra01Vert said:

I was trying to remove my coolant crossover tube plug with a 1/4 ratchet when the square hole rounded off and will no longer accept anything to take it out, What can I use to remove it without wrecking the crossover tube. The tube is perfect and don't want to mar it up is at all possible.

Help!

Thanks

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