RUKO Cobalt Drill Bit CO5 10.0mm
1.0 – 13.0MM, High Speed Steel Ground and Cobalt, split point, DIN 338 jobber twist drill. The left hand cutting twist drill is useful for drilling out broken screws. High-performance ground twist drill made from heavy-duty high speed steel. The fully ground twist drill has a precise concentricity. Thanks to the split point, this drill has good centring properties and requires little pressure. The titanium nitride coating is a universally usable standard coating. It has a 300-400 % longer service life than non-coated materials. Cooling is recommended.