Version:
Centred point grinding with thin chisel edge - gives easy spot drilling and high accuracy of the centre hole form. Very sturdy due to short flutes.
Precision centred ground point with thin chisel edge - gives easy spot drilling and high accuracy of the centre hole form. Very sturdy due to short flutes.
Note:
Use speed for the actual hole ⌀
(not necessarily the speed for the drill outer ⌀).