I recently purchased a bellhanger bit from this brand and was highly impressed with its performance. As a result of using this product, I found that it quickly drilled through tough materials with ease and didn't dull quickly. Its durability makes it a great addition to any industrial and scientific tool collection. However I wish it came in a larger range of sizes for more diverse drilling needs. Overall, I highly recommend this product to anyone in need of an efficient and durable cutting tool. .