Annular cutters or core drills are typically used in magnetic based drills but also work great in mills and can even be adapted to a drill press. The advantages of annular cutters are clean, precise large holes without huge horsepower requirements as only a fraction of the material is being cut compared to other drilling or milling options. We offer quality carbide tipped cutters (TCT) as well as standard High Speed Steel (HSS) in standard and metric sizes which can be re-sharpened multiple times for the lowest cost per hole.