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Fully Ground HSS Cobalt Step Drill for Electric Torque Wrench

Step drill bit is a drill bit that has the tip ground down to a different diameter.The transition between this ground diameter and the original diameter is either straight, to form a counter bore, or angled, to form a countersink.

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  • Step Drill

  • SHOWIRK

Fully Ground HSS Cobalt Step Drill for Electric Torque Wrench

HSS CO Step Drill Bit Rotary Step Drill Bit Brass Steel Rail Stainless Steel

The CBN ground and spiral flutes guarantee quiet running and high cutting performance.

Especially the chip flow is optimized, so even long, non-breaking chips will be removed easily.

The optimized chip flow protects the cutting edges and reduces built-up edges and cold weld

marks. The chamfer on the base of the cone makes withdrawal of the tool from the material

simple when through hole drilling.

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Step Drill Bit






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BMR TOOLS is generated from Danyang Fifth Tools factory,which was founded at 1986s,famous power tools accessories manufacturer.

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