After trying this high-quality cobalt drill bit I was amazed at its performance and durability .It smoothly drills through tough materials without any breakage. It`s perfect for use in industrial and scientific settings and can withstand constant use. The bit also has a longer lifespan compared to other brands, making it a wise investment in the long run. The only downside is it's a bit pricey, but the quality justifies the cost. Overall, I highly recommend this product for anyone looking for a reliable, heavy-duty cobalt drill bit..