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How are reviewers describing this item?
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Our engine has discovered that over 90% high quality reviews are present.

This product had a total of 17 reviews as of our last analysis date on Jul 3 2019.

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Posted by a reviewer on Amazon

The especially rough ones cut through stone like its nothing

Posted by a reviewer on Amazon

I also use them for fine glass etching and wood carving theyre balanced well the only vibration came from my abused flex shaft