- 100% Brand new and high quality!!
- The Drill is not easy to be broken.
- The ladder of its unique structure, a bit can open a variety of specifications of aperture.
- Do not need to use a center punch, compared with the ordinary twist
- Deburring, chamfering, elliptic hole enlargement, and twist drill, the
- Their function of them was unable, but it is possible.
- The use of tools: drill, bench drill. Work while water cooling, can
- Effectively extend the service life of the drill bit, recommend a drilling rate of 250-250 RPM.