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hot sell titanium step drill bit hss stepped drill bits set

hot sell titanium step drill bit hss stepped drill bits set
Feature highlights：

Step drill bits Made from high speed steel

For drilling cylindrical holes

Burr-free drilling
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specification

Hot sell titanium step drill bit hss stepped drill bits set

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

You can drill different diameters holes with one step drill bits