Carbide tipped annular cutters are high performance tools for drilling more holes, through more materials… faster. Maximize the performance of any portable magnetic drill press. Cut holes in cast iron, steel, stainless, and ultra hard or exotic alloys with the added ability to produce overlapping or interrupted holes easily. Used in conjunction with a magnetic drill press, holes are drilled more than 400% faster compared to a conventional twist drill. Annular cutters drill faster and more efficiently as they remove the material around the OD of the hole, leaving a solid core, or plug that is ejected from the cutter via a spring loaded pin in the drill's arbor. Less material removed equals faster drilling and longer tool life. Carbide Tipped Annular Cutters are superior to high speed steel in every way. They drill faster, longer, and drill a wider range of materials.