25 Piece Metric Cobalt Drill Bit Set in round Case, Heavy Duty, Gold Oxide Finish for Drilling Metal, Wood, Plastic, Sizes 1Mm to 13Mm by 0.5Mm, DWDCO Series ZMD/A4025-CO-PC. Metric Cobalt Drill Bit Set. 9.06 x 5.08 x 5.08 inches; 2.36 Pounds. HIGHER SPEED DRILL: Manufactured to National Aerospace Standard 907 and made of heat-resistant cobalt, these drill bits display higher red hardness which permits speeds up to 30% greater than high speed steel drills. BEST USES: The m35 5% cobalt drills are effective in drilling tough, high tensile strength materials such as Inconel, stainless steel and titanium, as well as wood, plastic and other hard metals. 135 DEGREE CUTTING ANGLE: Jobber length drill bits have a 135 degree split point for self-centering, fast penetration, and drilling with precision. METRIC SIZES INCLUDED: Full 25pc drill bit set comes with plastic storage holder case and includes metric sizes ranging from 1mm to 13mm by 0.5mm. ABOUT DRILL AMERICA: Drill America specializes in supplying a full line of industrial and contractor cutting tools since 1923; Our products include drills, taps and dies, reamers, end mills, carbide burs, countersinks and more. Drill America jobber length drill bit. Manufactured to National Aerospace standard 907. Made of heat resistant cobalt, they display higher red hardness which permits speeds upto 30 percent greater than High-Speed Steel drills and are especially effective in drilling tough, high tensile strength materials like PH stainless steel, inconel, and titanium. We offer the best prices around on high quality products. Our E-store includes media such as books, movies, music and games while offering electronics, toys, sporting apparel, clothing, tools, general home, garden items and more. We are always working hard to ensure your package arrives as soon as possible. We do not accept P. Please provide a physical address. We try our very best to make sure every customer is completely satisfied. If there’s a problem, message us! We’re happy to help.