Chicago Latrobe 69852 159 Series High-Speed Steel Short Length Drill Bit Set In Greenfield Industries is a leading manufacturer of expendable cutting tools and related products. The company sells thousands of products under the brand names Cleveland, Chicago-Latrobe, Cle-Line, Vermont Tap Die, Bassett, and Putnam Tools, Geometric, Vers-O-Tool, H G, and Acme-Fette. The product lines include drills, end mills, taps, dies, reamers, countersinks, counterbores, tool bits, and more. These tools are used in a variety of applications, If it's being drilled, cut, bored, dug, shaped, milled, stamped, formed, drawn, or threaded, Greenfield Industries products are hard at work. In 2009, Greenfield Industries became part of the Top-Eastern Group, the world?s largest manufacturer of twist drills. The blending of these two powerhouse companies allows both the global capacity necessary to engage in the world?s cutting tool markets. By combining the benefits of world-class manufacturing facilities, experienced sales and technical support, and well-known and respected brand names, Greenfield Industries delivers a winning combination to the market. As our family of customers, distributors, employees, products and services continues to grow, we maintain our commitment to excellence. Set of 21 short length drill bits includes inch sizes 1/16" through 3/8" in 1/64" increments High-speed steel (HSS) provides hardness for wear resistance Black oxide finish reduces wear while promoting chip and coolant flow on ferrous materials Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging Extra thick web for increased strength and rigidity compared to standard drill bits.Made in the USA