This hole pilot is a game-changer for all industrial and scientific cutting operations. The impressive cobalt construction ensures long-lasting durability and exceptional performance. It excellently works on hard materials, such as stainless steel, and minimizes blade wear. The hole pilot saves time and money by providing accurate and smooth cuts in the toughest materials. The only con is the pricey cost but, in the long run, its quality makes up for the investment. Highly recommended!