Standards din iso 9654 iec 61340 5 1 head shape extra narrow head cutting edges angled at 40 design cutting edge with full flush cutter function for virtually flush cutting maximum service life of cutting edge achieved through additional inductive hardening to approx 64 hrc with opening spring surface resistance 106 109 ohms material high alloy carbon steel c 60 application for virtually flush cutting thin soft wires in places which are particularly difficult to access