I bought this product hoping that the negative reviews I read about this product were completely wrong. After using these attachments with my Dremel rotary tool, I found that these attachments aren't as bad as we'd like to think. And those beats aren't as good as they would have us believe. I did not find any faults with this product and will buy this product again. If a person buys a product and uses it for a purpose other than what the manufacturer intended, the product is not at fault. I highly recommend this product.