Constructed of high speed steel for the best combination of strength, heat resistance, and wear resistance Precision ground point, flutes, body, clearance and drill diameter for ultimate accuracy and performance Ground point drill bits suitable for ferrous and non-ferrous metals, offering good drilling speeds and extended working life For fast and accurate drilling and milled from a solid steel form for a higher level of strength and precision Ideal for use on steel, cast iron, aluminium, malleable cast iron, brass and copper