Hole enlargement is reduced and a wide range of work materials are supported
- Applicable from carbon steel. alloy steel and cast iron to stainless steel.
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Amount of oversize is reduced due to a double margin and the shape of the negative rake blade tip.
AQUA EX Coating
Improved resistance to oxidation, heat and wear

Deep hole drilling with AQUA FLAT Series
5D FLAT Oil Hole drilling on slope surface
Suitable for cross hole drilling in a deep work position
Excellent for burr control or chip disposal in internal cooling.
AQUA Drill EX Flat lineup
5D FLAT Oil Hole drilling on slope surface
Sequential drilling (45°Slope → Flat surface)
Through Hole Drilling of Stainless steels (SUS304)
Wear comparison after 720 holes drilling
Wear and chip comparison after 720 holes drilling