Bosch Hex Shank HSS-TiN Step Drill Bit

The Bosch Hex Shank HSS-TiN Step Drill Bit is a stepped drill bit designed for smooth, burr-free drilling of several hole diameters with one tool. It suits drilling round holes, enlarging existing holes and deburring. The split-point tip allows an easy start without pre-punching.

This step drill bit is suitable for thin materials, including sheet steel, stainless steel, non-ferrous metals, sheet plastic and plastic. A CNC ground spiral flute gives optimised chip removal and less vibration for even drilling. Axial and radial relief grinding delivers high cutting performance and a smooth finish.

Made from HSS (high-speed steel), the bit offers a long lifetime when used with coolant. The hex shank gives a strong connection and maximum torque transmission in three-jaw chucks and ¼" internal hex tool holders. Laser-marked figures in both spiral flutes make each hole diameter easy to see, and the markings are durable.

Features and Benefits:
• Drills several diameters with one bit
• Hex shank for a strong connection and maximum torque transmission
• Fits three-jaw chucks and ¼" internal hex tool holders
• CNC ground spiral flute for optimised chip removal and less vibration
• Axial and radial relief grinding for high cutting smoothness
• HSS construction for a long lifetime when used with coolant
• Laser-marked hole diameters for easy identification

Specifications:
Total length: 70.5 mm
Step height: 4.0
Shank diameter: 1/4 inch
Step diameter (range): 4-20 mm
Net weight: 0.077 kg