Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Don't forget the goggles!

I agree with the others that this simply sheds its skin in a matter of seconds. I tried it on a low RPM and at a higher RPM and it sends metal shards hurdling at your face on both settings. In case you were wondering, ALWAYS wear protective gear. I do need this for polishing certain things, and it does do its job. But I now keep two on hand when working on a project.