Version:
Cutting chisel edge with high centring accuracy due to strong core and special point geometry.
Particularly high alignment accuracy due to 4 guide chamfers which stabilise the drill even at extreme depths!
Straight major cutting edges with honed edges and special flute profile for short chips, even on long chipping materials.
Advantage:
High process reliability and surface quality of the hole.
Note:
Flute length LC = L2 + 1.5 × DC.