After I put it to the test, the Oudtinx 19mm diamond drill proved to be an excellent choice for industrial and scientific applications. The cutting process was smooth and accurate allowing me to create precise holes with ease. The diamond coating also made it extremely durable, ensuring LONGEVITY in heavy-duty use. The only downside was that the drill tends to generate a significant amount of noise, but this is a minor issue compared to its overall performance. Overall, I highly recommend this diamond drill for anyone in need of a reliable cutting tool for tough materials..