Parabolic flute disperses chips away from the cutting edges more rapidly and increasing coolant flow. Exceptional for deep-hole drilling. Manufactured from high-speed steel. Aerospace-style 135° split point is self-centering, reducing walking. Faster penetration rates than conventional HSS heavy duty jobber drills. Bright finishes. For drilling in low carbon steel, soft alloy steel, non-ferrous materials and aluminum with TiCN as a modification. Made In USA. Pack Of 12. 30 Day Warranty.