MK insert shank precision design

Execution: Fully hardened and precisely ground. High long-term roundness accuracy, as chips do not embed in the hardened surface and light impacts do not cause notches. With MK shank and ejector sleeve. The precision version has the highest roundness accuracy and is recommended for self-tightening high-performance drill chucks No. 341000. Use: For mounting drill chucks on drilling machines, lathes, fixtures, etc.