Enlarge, align and drill holes in steel, stainless steel, tough alloys up to 1/2 In. depth in plate, pipe, tubing, and more. 5 different drill sizes in one tool make this an ideal maintenance tool for construction, steel fabrication, and other maintenance, repair, operations applications. Features 3/8 In. flatted shank for use in power drill or drill press. Industrial quality tool. Safety collar prevents operator over-penetration. Flute length: 2-3/4 In. overall length: 4-1/2 In.