Insert drill bit TU

for general purposesHSScenter

YIH TROUN indexable center drill use HSS material and swiss screw to achieve better strength of shank and insert clamping. Patented 390 clamping system improve insert life significantly and more user-friendly in changing inserts. It achieves not only the great center precision but also reduces the time of changing and calibrating the tool. A better clamping strength of the side-lock on shank's flat plane. Features HSS material. Use swiss screw. Same shank can fit in 11 different inserts.