As a hesitant buyer, I purchased this Industrial and Scientific cutting tool for my metal works project. As a result of my tests, I determined that this drill bit is exceptional for drilling through heavy metals as it has a reduced shank that fits perfectly onto my power drill. It produces clean and precise holes with minimal effort. However, I did notice some minor chipping after multiple uses, but this was expected with the rigorous drilling. Overall, I highly recommend this product to any craftsman looking for a durable and effective drill bit.