After struggling with my old drill bits I was skeptical about trying new ones .However, this triangle-shaped tool exceeded my expectations. My analysis of this product showed that it is not only efficient, but its also durable. It made drilling through concrete and brick so much easier. The industrial strength is definitely noticeable. ITS only downside is that it's a bit pricey, but it's probably worth the investment in the long run. Overall, a great addition to my collection of industrial and scientific tools..