Tool specially matched to drilling holes without through-coolant. Concave major cutting edges and a special flute profile ensure a good chip evacuation. The sturdy cutter geometry with special point geometry and 4 cutting edges ensures drilling with good process reliability. A wide range of applications in steel materials thanks to a combination of tough ultra-fine grain carbide and extremely wear-resistant and heat-resistant coating.

Flute length L_C = L₂ + 1.5 √ó D_C.
Form HB and HE supplied at the same price as HA.
Form HB: order with No. 122772.
Form HE: order with No. 122773.