Product Information
- A uni-que ladder structure, a drill can open a variety of specifications size aperture, a ladder drill on a box of drill bit.
- Do not use the center red, compared with ordinary twist drill is not easy to break. Site construction, a ladder drill a variety of specifications apply.
- Deburring, chamfering, open hole expansion, twist drill can not complete the function it becomes possible.
- Compared with ordinary twist drill. Shaking small, without leading the use of the center can also open out the beautiful aperture out.
- The use of tools: pistol drill, bench drill. While working while cooling water, can effectively extend the drill bit
