Ø 8.0 x 117 x 75 mm. High-performance spiral drill bit, suitable for all standard drilling tasks in commonly used materials. This powerful, ground spiral drill bit is made of high-performance high-speed steel. The fully ground spiral drill bit offers increased roundness accuracy. The TiN coating enhances the surface hardness to approximately 2,300 HV and the heat resistance up to 600 °C. Achieves high tool life with increased cutting values. Applications: for steel, alloyed and unalloyed cast steel (up to 1100 N/mm² strength), gray cast iron, tempered cast iron, ductile cast iron, sintered iron, nickel silver, graphite, short-chipping aluminum alloys, brass, and bronze.