Exactly central ground point. Easy spot drilling and high shape accuracy of the centre hole. Sturdy due to short flutes.
Extra long version.
Point angle 90° for spot drilling and countersinking in one operation when a drill of smaller ⌀ is used afterwards.
HB and HE shanks are available at the same price as HA. (from ⌀ 6 mm)
form HB: order with No. 121050.
Form HE: order with No. 121051 + 129100 HE.
Use the speed for the actual hole ⌀ (not generally the speed for the drill outer ⌀).