Annular cutters are designed for fast, efficient hole making and cut only that material necessary to produce a quality hole. Carbide tipped cuts hard materials including steel, cast iron, heated and stainless steels. For use with magnetic drill press only. Do not use with a standard hand drill or drill press. 3/4" Weldon Shank fits most magnetic drill presses. Comes with pilot pinAnnular cutters are designed for fast, efficient hole making and cut only that material necessary to produce a quality hole. Carbide tipped cuts hard materials including steel, cast iron, heated and stainless steels. For use with magnetic drill press only. Do not use with a standard hand drill or drill press. 3/4" Weldon Shank fits most magnetic drill presses. Comes with pilot pin