Bright finish. Made of carefully selected fine high speed steel, individually heat treated to extreme hardness in a special process that retains toughness.

Gesswein High Speed Steel Blanks & Cutters are extremely hard. We suggest they be ground by either the plunge cut or the cross feed method with a soft grade grinding wheel.

Gesswein High Speed Blanks & Cutters are 64-65Rc. Ground to a close tolerance of +0.0002 - 0.0000".

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