≥ ⌀ 6 mm with drive flat to DIN 1835-B.
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.
Point angle 120° so that the cutting edges of the following drill engage easily.
Use speed for the actual hole ⌀
(not necessarily the speed for the drill outer ⌀).