I purchased an industrial drill bit hoping it would last me a while. HOWEVER, after just a few uses, the bit started to dull and became completely unusable. Thanks to my knowledge gained in practice, I can confidently say that this product is not up to par. While the price may seem reasonable, you'll end up spending more in the long run due to its poor quality. The only pro is its initial affordability but that`s not enough to make up for its lack of durability. .