High Speed Steel (HSS) provides good wear-resistance and can be used in general purpose applications for both ferrous and nonferrous material
Tap: Spiral point taps are the most efficient, rigid and useful cutting taps and are recommended for through holes in most materials. Plug taps have up to 5 chamfer threads.
Drill: 135 self-centering split point on the HSS drill prevents walking when starting a hole and it's commonly used on heavy duty tools