1~10X0.5 HSS-CO DRILL SET (FOR SUS)

Features

• 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.