Version :Cutting chisel edge with high centring accuracy due to strong core and special point geometry. High roundness and alignment accuracy of the deep hole, thanks to 4 guide chamfers. Outstanding chip evacuation due to 4 internal cooling channels from ⌀ 3.8 mm. Up to 3.7 mm ⌀ with 2 internal cooling channels. Straight major cutting edges with honed edges and special flute profile for short chips, even on long chipping materials.

Note :Flute length LC = L2 + 1.5 × DC. Form HB and HE supplied at the same price as HA. Form HB: order with No. 123010. Form HE: order with No. 123008 + 129100HE.