Adopted helix angle 15 degrees and shoulder radius prevent chipping. Thinning shape suitable for high hardened materials improved chip resistance at the center of drill and chip evacuation.

Exclusive thinning for high hardened materials
Web thickness is 1.6 times more (compare with nomal carbide solid drill)

Stable drilling for high hardened materials up to 70HRC by adopting “DH1” coating

By adopting “DH1” coating which provides high hardness & oxidization resistance, improved wear resistance and gives longer tool life. Adopting micro grain carbide with high toughness,
improved chipping resistance.

FAQ about carbide drill

     Is it possible to machining for carburization with EZ HARD DRILL?

     Please Use EZ hard drills at first, and then STRIKE DRILL in the middle of machining.