Bosch HSS-TiN Step Drill Bit

The Bosch HSS-TiN Step Drill Bit in the 6mm–30mm size range allows you to drill a wide variety of hole diameters with a single bit, making it a versatile choice for general sheet metalwork, plastic fabrication, and electrical enclosure work. The 6mm starting size keeps fine work manageable, while the 30mm upper limit covers a broad spread of common hole sizes. The split-point tip starts cleanly without pre-punching, and the CNC ground spiral flute removes chips efficiently whilst minimising vibration. Axial and radial relief grinding deliver outstanding cutting smoothness throughout the range. Made from HSS and coated with TiN for a long working life — particularly when used with coolant — the bit features laser-marked diameter figures on both flutes for easy size identification on the job. Features and Benefits: • Covers 6mm–30mm diameter range with a single step drill bit • Split-point tip for accurate, clean starts without pre-punching • CNC ground spiral flute for optimised chip removal and low vibration • Axial and radial relief grinding for maximum cutting smoothness • HSS construction with TiN coating for extended service life • Laser-marked diameter figures on both spiral flutes • 3-flat shank for secure chuck grip and high-torque transmission Specifications: Diameter Range: 6mm–30mm