3PC HSS Step Cone Drill Bit 3-12, 4-12/20mm Titanium Juego de brocas escalonadas

Description

3PCS 3-12mm 4-12mm 4-20mm HSS Straight Groove Titanium Coated Wood Metal Hole Cutter Core Drill Bit Set
Suitable for:
Products for automotive processing, aerospace, sheet metal processing,
Installation and maintenance of electrical and other industries,
High-altitude operations with hand drills and other tools.
Feature :
1. The unique step structure, a variety of standard size drill carve aperture, a box arrived on a ladder drill bit.
2. Without the use of center punch, easy to break, a step drill specifications apply.
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
6.Material :HSS
Sizes: 4~20 / 3~12 / 4~12
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)
Package Included:
3Pcs Drill Bits + Storage Pouch
3pcs Juego de brocas escalonadas
3PC HSS Step Cone Drill Bit Juego de brocas escalonadas Titanium Hole Cutter Set