Our 9-Piece Annular Cutter Set features dual alternating tooth geometry and thin-wall construction to deliver up to 15% faster cutting than the competition. The 20% thinner walls displace less material for the same size hole, giving you fast, burr-free holes in anything from sheet metal to thick steel plate. The MILWAUKEE proprietary 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 1/2″, 9/16″, 5/8″, 11/16″, 3/4″, 13/16″, 7/8″, 15/16″ and 1-1/16″ cutters, two 2″ pilot bits (centering pins) and a sturdy carrying case