Our team at the manufacturing plant found the Bosch cobalt drill highly efficient and durable .Using this product, our team found that it could easily penetrate steel and other tough materials with ease consistently producing high-quality holes. The added cobalt composition ensures the drill bit remains sharper for longer periods, saving us time and money on replacements. The only drawback was the slightly higher price than other drill bits in the market. Overall, we highly recommend the Bosch cobalt drill for any industrial cutting needs..