This carbide tipped countersink is an excellent accessory for any industrial and scientific cutting tools collection .As A result of using this product I found that it can easily drill a countersink hole in even the hardest materials. The carbide tip is incredibly durable and can withstand repeated use without losing its sharpness. The tapered shape of the countersink ensures a clean and smooth finish. One minor con is that its a bit on the pricey side, but I believe it's worth the investment for the quality and longevity. Overall, I highly recommend this product for anyone in need of a reliable and efficient countersink tool..