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hss_titanium_plating_chamfer_cutter_step_drill_bit

hss_titanium_plating_chamfer_cutter_step_drill_bit
Feature highlights：

Unique umbrella structure drill bit,can drill a variety sizes of holes

Center punch free for start drilling with this type of step drill bit

HSS step drill bit has high hardness, sharp edge and good cutting effect
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specification

hss titanium plating chamfer cutter step drill bit

Unique umbrella structure drill bit,can drill a variety sizes of holes

HSS step drill bit has high hardness, sharp edge and good cutting effect

Gold titanium coating ensure the drill bit  do not fade, do not scratch.

Deburring, chamfering and round hole reaming are done at one time with little shaking.