PowerTec 91615 CryoCobalt Drill 8mm

CryoCobalt drills are unique due to the micro-sharpness created by using added Cobalt, which makes them ideal for working on Spot Welds in high-strength steels and ultra high-strength boron steel In independent testing, CryoCobalt drills typically outperformed standard HSS drills by up to 5 times, and HSS Cobalt drills by up to two times (UKAS acredited test house ) CryoCobalt drills last longer, resist higher temperatures, retain their strength better than standard HSS or Cobalt drills, and can be re-sharpened when necessary Made from CM-88 Chrome Molybdenum High Heat Steel – patented Cryophase thermal cycling cryogenic treatment Drills material up to 58HRC hardness at temperatures up to 650°C, created by the addition of 8% added Cobalt ( compared with std HSS Steels )135° angle split drill point with Gold-Oxide coating