EX gold twist drill Regular form (EX-GDR) for general processing EX-GDR 2.55
Ship pack of
Helix Angle (Degree)
Groove Length FL (mm)
Overall Length L (mm)
Shank Diameter d (phi mm)
Cobalt HSS (high speed steel) HSS-Co
Blade Diameter D (phi mm)
Carbon steel, cast iron, aluminum alloy, magnesium alloy
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2 Customer Reviews
The reviews are automatic translation.
On 2015-05-06 11:53:27
I use it for the pilot hole of the tap. It is a beautiful finish. Although it is a short period of use, it is also likely to have a blade holder.
On 2011-01-11 13:58:28
There was no problem even using 400 holes.
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