HSS (high-speed steel) drill bit offers drilling in several diameters and extended lifetime when using coolant. 3-flat shank prevents slipping in the chuck and provides powerful, high-torque transmission. Split-point tip offers easy start, removing need for pre-punching. Hole diameter easily visible with durable markings on both spiral flutes. Features axial and radial relief grinding for performance and smoothness. CNC ground sprial flute provides optimised chip removal and less vibration for even drilling. Suitable for deburring, drilling round holes and enlarging existing ones in thin materials, such as non-ferrous metals, sheet plastic, sheet steel, plastic and stainless steel.