The Champion 5 Pc. HSS Annular Cutter Kit is expertly designed for professionals needing efficiency and precision in their cutting work. Capable of drilling large diameter holes through steel plates, structural beams, pipes, and tubes, this set includes five essential sizes ranging from 9/16 to 1-1/16 inches, allowing for versatility in various applications. Each cutter features a robust high-speed steel construction which is surface treated to enhance cutting speed and prolong tool life, ensuring consistent performance even under demanding conditions. When used in conjunction with a pilot pin, the metal plug is ejected seamlessly, facilitating faster and more productive drilling. For optimum performance, employing BruteLube fluid or wax will further elevate heat resistance, making this kit an essential choice for use with RotoBrute magnetic drill press systems and most other magnetic drill systems.