• Universal step drill bit with a diameter range of 4 to 39 mm in 14 clearly defined levels. • Made of polished HSS steel to ensure precise results and a long service life. • Cross-cut tip that allows precise fixing without the bit slipping on the material. • Stable 10 mm shank with a three-sided design to prevent slipping in the chuck. • Ideal for drilling sheets, non-ferrous metals, plastics, acrylic glass, and thin woods. • Allows making holes of different sizes in a single operation without changing tools.