Description: HSS Titanium Step Drills 3-12mm 4-12mm 4-20mm Cone Drill Power Tools Drill Bits
- The unique step structure, a variety of standard size drill carve aperture, a box arrived on a ladder drill bit.
- Without the use of center punch, easy to break, a step drill specifications apply.
- Deburring, chamfering, expanding the oval hole
- Small sway, without leading to use a center punch can carve out a nice aperture.
- Surface treatment: Titanium
- step drill bit: 4-12mm (4mm, 6mm, 8mm, 10mm, 12mm)
- step drill bit: 4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm)
- step drill bit: 3-12mm (3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm)
- 1 x 3 PC HSS step drill