Hougen \"12000 Series\" cutters were the original annular cutters invented over 35 years ago. With the most features of any annular cutter, \"12000 Series\" cutters provide the best performance in the largest variety of materials. Compared to traditional tooling (twist drills, etc.) \"12000 Series\" cutters can multiply your cutting speed by up to 3 times. And you get longer tool life, a more accurate hole, a better finish, with no burrs. Hougen cutters maximize feed rates because up to 10 cutting edges distribute the cutting load evenly. \"12000 Series\" cutters convert a smaller area to chips, requiring less horsepower and thrust. Hougen® Rotabroach® Annular Cutter, Series: 12000, 5/8 in Diameter Cutter, 2 in Cutting Depth, 3/4 in Shank, Weldon with 2-Flat Shank, M2 HSS, Bright, Applicable Materials: Mild Steel, Structural Steel, Aluminum, Stainless Steel, Ferrous and Non-Ferrous Materials