Subland step drill bit HSS

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  Subland step drill bit, made of HSS steel, 6,5/ 9,5 mm

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  • made of durable M35 high speed steel with 5% cobalt addition for heat resistance;
  • used for precision and high speed drilling;
  • very flexible, has better resistance to fatigue cracking;
  • round shank drill bit extension;
  • deep double volute for fast evacuation of swarf.