Products are suitable for all kinds of power drills and woodworking punching tools.
Double cutting blade design makes for cutting faster, automatic deburring from the hole when drilling.
1. The unique step structure, a variety of standard size drill carve aperture, a box arrived with a ladder drill bit.
2. Without the use of center punch, easy to break, a step drill specification applies.
3. Deburring, chamfering, expanding the oval hole
4. Small sway, without leading to use a center punch can carve out a nice aperture.
5. Surface treatment: Titanium
5 step drill bit: 4-12mm (4mm, 6mm, 8mm, 10mm, 12mm)
9 step drill bit: 4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm)
10 step drill bit: 3-12mm (3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm)
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