Nine9 NC Spot Drill with ACE Spot Drill
Here is the video to show you
ACE Spot drill can cut in higher speed with minimum noise.
ACE spot drill has
Symmetric 2 flutes design, can reduce the lateral force.
Dual clamping screwed design, can avoid the vibration. Especially in heavy cutting or weak clamping situation.
More information of ACE Spot Drill:
https://nine9.jic-tools.com.tw/ACE-Sp...