The ground HSS-TiN twist drill achieves maximum longevity when drilling metal. When used with 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 twist 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 like Plexiglas. The HSS-TiN twist 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 active drilling initiation and perfect centering without wandering. Not suitable for aluminum. Use only with coolant.