drill bits_step drill bits_HSS step drill bits manufacture in China

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Made from high speed steel

For drilling cylindrical holes

Burr-free drilling

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specification

HSS straight flute step drill bits

the drill bits can drill cylindrical holes in solid material up to a thickness of 4mm(5/32")

Ideal tool for sheet metal workers, electrical contractor auto mechanics and general contractors

Burr-free and vibration-free drilling

titanium coated surface

HSS straight flute step drill bits

HSS straight flute step drill bits chart