Driak 4-52mm Metric HSS Titanium Surface Step Drill Bit Set for Wood Metal Hard Materials Hole Drilling Tool
Special Features
- 4-32mm HSS Step Cone Drill Bit Set Titanium Metric Hole Cutter Tools
- Material: High speed steel
- Surface treatment: Titanium
- TWO-FLUTE DESIGN: clears chips faster and allows particles to escape easily
- compared with ordinary twist drill. Shaking small, do not need to use the central punch can also open a beautiful aperture out.
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