For the serious metalworkers out there, this annular cutter set is pure quality! You get six different sizes - 9/16\, 5/8\, 11/16\, 13/16\, 15/16\, and 1-1/16\ - plus a pilot pin, so you've got the right tool for any job. Made from M2AL high-speed steel that's seriously tough and wear-resistant. The 3/4\ Weldon shank fits most magnetic drill presses perfectly. With a 2-inch cutting depth, you can handle some substantial material. The geometric blade design centers beautifully and resists chipping like a champ. These cutters work on steel plates, aluminum, brass, cast iron - you name it. The spiral groove design makes chip removal smooth and easy. Perfect for construction, fabrication, shipbuilding, or any industrial application where you need clean, precise holes in metal. Way better than traditional drill bits for larger holes - faster cutting, less effort, and cleaner results. If you're tired of struggling with hole saws or step bits, these annular cutters will make your work so much easier and more professional!