Hss taper shank drill applications: general purpose hss drills designed for drilling holes in a variety or normal steels, cast iron, and other ferrous and non-ferrous metals and alloys suitable for a variety of drilling applications and conditions taper shanks are sized by the standard morse taper sizes to achieve optimal performance and extended tool life, suitable lubricating/cutting oils or appropriate coolant fluids are recommended for most drilling operations available in a wide range of diameters and lengths features: right hand (clockwise rotation) cutting direction standard two flute design normal spiral – helical flutes standard 118 point angle standard and special size morse taper shanks correspond to drill diameter available flutes are proportional to length technical data: manufactured from high speed steel cylindrically ground black finish