The ground HSS-TiN spiral drill achieves maximum longevity when drilling metal. With the use of an appropriate cooling system, the friction and wear are kept to a minimum due to the titanium nitride coating. The high surface quality of this ground HSS spiral drill ensures extended usability. It is suitable for alloyed and unalloyed steel, ductile iron, cast iron, sintered iron, nickel silver, copper, bronze, and hard plastics such as Plexiglas. The HSS-TiN spiral drill is manufactured according to DIN 338. It belongs to drill type N (small side cutting angle) with a drill tip of 135 degrees and diameter tolerance h8. The drill tip with cross grinding allows for an active drilling start and perfect centering without wandering. Not suitable for aluminum. Use only with coolant.