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These punch 1.25mm hole metal sheet stock to 20 gauge. a clean hole without barbs edges. gauge guard, the area around the hole be free of unsightly indentations! Instructions the the pliers properly there be space insert your metal between the widest of pin the jaw the pliers little extra over. doesn't fit or there's space, simply expand the jaw opening a little farther by turning the right. (Turn heavier left for lighter NOTE: If is properly you may damage to your due to extra tension the plier jaws.
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