i was only able to take two bolts out of the eight i needed to with this set before they were unusable. Each bit dulled after the first use and the extractors rounded at the tip so the teeth would not pull them in. In most cases the bolts were so loose that the bits actually drove them deeper before not being able to cut into them since they were so dull.
When i tried to return them to the store the cashier told me drill bits were not covered even though two of them were completely broken and the other 8 pieces were completely rounded off.
Either pony up the money for the real set or spend...
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