Dual alternating tooth geometry and thin-wall construction help Milwaukee’s 11/16" x1 Annular Cutter displace less material for the same size hole, giving you fast, burr-free holes in anything from sheet metal to thick steel plate. Milwaukee’s proprietary high-speed steel with three hardness zones helps minimize breakage and helps the bit last longer. It comes with a 3/4” Weldon shank, which is ideal for use with most small magnetic drill presses and large magnetic drill presses with the correct arbor.