General purpose drills for steels, cast steel, grey cast iron, malleable cast iron, nickel brass, aluminium alloy and graphite. Made from high speed steel with a black oxide coating for excellent heat and wear resistance during applications. Features and Benefits Made from high speed steel for increased rigidity and strength Black oxide coating for greater heat and wear resistance Specifications Point angle: 118 Tolerance of diameter: h8 Tolerance of shank: f11 Black finish (W-Finish), up to 3.00mm bright finish BS 328/DIN338RN Typical Applications Steels Cast steels Grey cast iron Malleable cast steel Cast iron Nickel Brass Aluminum alloy Graphite