Based on our own experience with this industrial and scientific drill bit, we found it to be a trustworthy cutting tool for all our heavy-duty tasks. The 4-inch carbide tip bore through VARIOUS materials including metal and concrete seamlessly. The 16-inch length provides the necessary reach to work on deep structures, unlike shorter bits... However the price point could be a setback for budget-conscious DIYers. Overall, we recommend this product for industrial jobs..