Use: Particularly suitable for precise drilling in hard and soft woods as well as uncoated chipboard. For use in electric hand drills and stationary drills. CNC ground - Provides higher precision for absolutely sharp cutting. Silver solder: allows significantly higher tensile strengths on the HW cutting edges and prevents breakout or Removing the HW cutting edges. Selected carbide: Only high quality carbide of the highest quality is used. Perfect concentricity: prevents imbalance (no vibration) and ensures precise work. Cutting angle: Optimised cutting edge geometry for drilling in a wide range of wood types as well as wood plate types. Design: DIN 7483 G, with centring point, 2 tapers, 2 cutting edges and offset cylindrical shaft.