Chicago Latrobe 57850 550 Series Cobalt Steel Jobber Length Drill Bit Set with Metal Case, Gold Oxide Finish, 135 Degree Split Point, Inch, 29-Piece, 1/16″ – 1/2″ in 1/64 Increments. Set of 29 jobber length drill bits includes inch sizes 1/16″ through 1/2″ in 1/64 increments. Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials. Gold oxide finish lubricates and provides wear resistance 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. 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. The blending of these two powerhouse companies allows both the global capacity necessary to engage in the world’s cutting tool markets. As our family of customers, distributors, employees, products and services continues to grow, we maintain our commitment to excellence. 1.8 x 7.1 x 4.2 inches; 3.4 Pounds. Product Dimensions: 7.1 inches x 1.8 inches x 4.2 inches. Weight: 3.4 lb. We reserve the right to cancel any order for any reason at any time. We are not responsible for undeliverable addresses. Your satisfaction is guaranteed! All of our items, unless otherwise stated, will only run on 120 volts. Please check to make sure your country complies with these specifications. We will work with you to resolve any problem you may have.