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High Speed Steel Step Drill Bit, 4-42mm Titanium Step Drill Multiple Hole Stepped Up Cone Bit for DIY Lovers

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Free shipping on orders over $29.99

$20.49

$ 8 .99 $8.99

In Stock

About this item

  • Unique step structure, one drill bit can open a variety of sizes and sizes, and one step drills to a box of drill bits.
  • No need to use the center punch, compared with ordinary twist drill is not easy to break. On-site construction, a variety of specifications for a step drill.
  • Deburring, chamfering, open elliptical hole expansion, twist drill can not complete the function it becomes possible.
  • Compared with ordinary twist drills. Shaking is small, and you don't need to lead the center punch to open a beautiful aperture.
  • The use of tools: pistol drill, bench drill. When the water is cooled while working, it can effectively extend the service life of the drill bit. The recommended drilling speed is 250-400 rpm.


Specification:
Name: Step drill
Material: high speed steel 4241 (suitable for workpieces with hardness below 25 , such as carbon steel, sheet thickness below 5MM)
Specifications: 4-42mm (4,6,9,12,15,18,21,24,27,30,33,36,39,42) 10mm handle
Surface treatment: titanium plating

Package Content:
1PCS Step drill


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