19 Piece Cobalt/HSS Drill Bit Set
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Precision ground from M35 high speed steel bars with 5% cobalt achieving a hardness of some 66-67 Rockwell. Intended for use on alloy and hardened steels, cast iron, titanium and many other really tough, hard-to-drill materials such as stainless steel. Sizes range from 1-10mm x 0.5mm.
- M35 precision ground high speed steel
- For use on alloy, hardened steels, cast iron, titanium and more
- 19 drills, sizes range from 1mm to 10mm x 0.5mm steps