High efficient machining is possible due to 4 flutes.
High rigidity of tool and un-equal pitch control the vibration.

Achieved low cutting force due to helix angle 45°, and provided good cutting performance.
Adopting unique flute geometry at the center point achived good chip ejection & stable machining.

Newly developed “DH coating”
Adopted new PVD coated grade “DH102” by combination of newly developed DH COATING & super micro-grain carbide suitable for high hardened material. Achieved longer tool life.