Dual alternating tooth geometry and thin-wall construction help Milwaukee’s 6-Piece Annular Cutter Set displace less material for the same size hole, giving you fast, burr-free holes in anything from sheet metal to steel plate. Milwaukee’s high-speed steel with three hardness zones minimizes breakage and helps the bits last longer. Each cutter 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. The kit includes 9/16", 5/8", 11/16", 13/16", 15/16" and 1-1/16" cutters, a 1" pilot bit (centering pin) and a sturdy carrying case.