I was hesitant to try THIS industrial and scientific product but it has exceeded my expectations. When I tried this centering degree combined countersink, I was blown away by how easy it was to use... It ensures perfectly centered holes every time, which is crucial in my line of work. The added depth stop is also a great feature. The only con is that its a bit pricey, but the quality justifies the cost. Overall, I highly recommend it to anyone looking for precision drilling tools..