{"translated":"六角柄中心鑽頭"} Wait, the source content is in French ("Mèches à centrer à queue hexagonale") but source_language is en-US. That seems

The hex shank locks into my quick-change chuck with zero play, and the centering point starts clean without skating across the workpiece. I’ve used it on both mild steel and oak, and the holes come out dead-on every time.

Finally got tired of drill bits wandering on center punch marks, and these fixed that right away. The hex shank seats solidly in my chuck with zero slip, and the centering action is dead-on accurate every time.

The hex shank locks into my quick-change chuck with zero wobble, which makes repeat drilling dead-on accurate every time. I’ve used these for a full day of metal layout work and the centering point still hasn’t dulled or drifted.