TUSK MHSS METAL DRILL BITS are designed for use in drills or drill presses. Constructed of M2 High Speed Steel for the best combination of strength, heat resistance, and wear resistance. Fully ground HSS drill bits with a Titanium Nitride (TiN) coating for longer life with an increased 135 degree point which leaves holes relatively clean of burrs (less clean-up) enabling a faster drilling rate and lower feed pressure. Self centering tip for easy start without hole punch. Suitable for alloyed and non-alloyed steel, soft stainless steel, soft cast iron, aluminium, copper, brass, bronze and hard plastics.