[Special Note]:
HRC (high breaking capacity);Our products are divided into two hardnesses, HRC62 and HRC67.
The first material is HRC62 (marked as A on the picture), drilled plastic, wood, and aluminum are all right.
But if you need to drill steel or iron plates, or want a longer tool life, we recommend that you choose the second material HRC67 (B-C is indicated on the picture).
[Specification]:
4 - 12mm: 5 Steps (4-6-8-10-12mm) Or 9 Steps (4-5-6-7-8-9-10-11-12-mm)
4 - 20mm: 9 Steps (4-6-8-10-12-14-16-18-20mm)
4 - 32 mm: 15 Steps (4-6-8-10-12-14-16-18-20-24-26-28-30-32mm)
[Advantages]:
1. Step drill is triangle round handle or hexagonal handle, prevent sliping.
2. "X" shaped openings, drilling is not easy to slip. Higher precision, more sharp, burr-free drilling.
3. The gold is titanium coating, more wear and oxidation resistance, not rust.
4. The unique step structure, a drill can drill a variety of sizes of the aperture. You can deburring, chamfering, punching elliptical hole.
5. The hardness of the workpiece below the use of 25 ° below, such as iron, aluminum, PVC board, insulation board, wood, workpiece thickness 4mm.
6. Suitable for installation in the pistol drill and bench drill.
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