A 19 piece metric heavy duty drill set made of 5% cobalt material with excellent heat resistance. Ideal for drilling steels with tensile strength up to 1,400 N/mm2, very hard bronze, stainless steels as well as heat and acid resistant steels. The high speed steel and cobalt construction allows for greater rigidity when cutting through harder materials. Features and Benefits • Manufactured from high speed steel with 5% cobalt for added strength • Excellent heat and wear resistance for prolonged tool lifespan • Supplied in a robust carry case for easy portability and storage Contents • Set contains 1x 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5 and 10.0 mm drills Specifications • Point angle: 135° • Helix angle: normal • Web thickness: strengthened • Relief angle: normal • Tolerance of diameter: h8 • Tolerance of shank: f11 • Supply unit • All diameters - 1 pc • Manufacturing Standard: BS 328, DIN 338B Typical Applications • Drilling • Steel • Hard bronze • Stainless steels