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  • Brand new and high quality.
  • The ladder of its unique structure, a bit can open a variety of specifications of aperture.
  • Do not need to use center punch, compared with the ordinary twist drill is not easy to be broken.
  • Deburring, chamfering, elliptic hole enlargement, twist drill, the function of them was unable, but it is possible.
  • The use of tools: drill, bench drill.Work while water cooling, can effectively extend the service life of drill bit, recommend drilling rate of 250-250 RPM.


  • Size: 4-22 mm(4,6,8,10,12,14,16,18,20,22MM).
  • Total:80mm(L).
  • Allow 1-3mm measurement error.
  • Material:High speed steel 4241.

Package Included:

  • 1 x Hex Titanium Step Drill.

NO Retail Box. Packed Safely in Bubble Bag.

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