Carbide small diameter coated drill with high speed and long life achieved through original blade edge shape (patented : patent no. 5800477)and groove shape for drilling.
The two-stage tip angle significantly reduces wear and chipping on the corner than conventional drills and has greater performance than conventional drills that is not limited to high-speed use.
The original groove shape significantly improves the discharge efficiency of chips during high feed and also prevents drill breakage from corner chipping that is not limited to high-speed use.