for the toughest demands, with gripping zones for flat and round material for versatile use, with cutting edges for soft and hard wire as well as piano wire, long cutting edges for thicker cables, cutting edges additionally inductively hardened, cutting edge hardness approx. 64 HRC, particularly wear-resistant gripper jaws, hardness of the gripping jaws approx 53 HRC, chrome vanadium high-performance steel, forged, multi-stage oil-hardened