Annular Cutters are outstanding for hole-making processes, with faster cutting speed, more long-lasting and better hole finishing. Since annular cutters take less horsepower, they are especially suitable for machines with lower power so that you can save time and use more potential cutting tools. Compared to standard twist bits, they drill much larger holes with less force and time. They are the solution of making holes on metal. Accurate burr-free holes are produced with tight tolerances without pre-drilling or step drilling. Uses Standard 3/4 in Weldon shank complatible with most Magnetic Drill Presses.