These drill bits work with a very high accuracy and very low tolerances, thus high-precision work with a high tool life time is possible
 We recommend to use these drill bits for metric helicoil thread inserts installation, as they ensure exact size of the core hole needed
They can be used to drill new core hole or enlarge existing hole of the damged thread insert. They are also suitable for the universal use where exact hole sizes is required
To be used in materials such as steel, cast steel, cast iron, graphite, brass, aluminium and bronze
The cutting direction is right and the point angle is 118°. DIN 338. Cylindrical shank
Available in sizes M2 - M42 (equivalent diam. 2.1 - 43.0 mm)