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DIN 1897

twist drill bit


Serie Nr: NDS-69b



Coating:Bright, Tin, Tianl, Ticn

Spiral Angle:30°

The Serie of NDS 69b is made of high-quality high-speed steel through high-temperature treatment and processed by lathe through grinding, milling and making step. The point angles contain 118 and 135 degree. Suitable for cast iron, carbon steel, alloy steel, stainless steel, non-ferrous metals under 32 HRC.

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