CraftsCapitol™ Premium Metric Spiral Flute Set [3PCS]
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Titanium Step Drill Bit Set Set High-Speed Steel Hole Cutter Titanium Coated 4-20mm
The ladder of its unique structure, a bit can open a variety of specifications of the aperture.
Do not need to use the 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.
The 3 Cutters Come in the Following Sizes:
- 4-12mm Length: Approx. 6.7cm/ 2.64"
- 4-20mm Length: Approx. 7.4cm/ 2.91"
- 4-32mm Length: Approx. 10.2cm/ 4.02"
- 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 2mm)
- 4-20mm : 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 14mm, 16mm, 18mm, 20mm
- 4-12mm (4mm, 6mm, 8mm, 10mm, 2mm)