Cutting edge hardness approx. 54 HRC. INOX - tool steel. For ultra fine cutting work, e.g. in electronics and fine mechanics. Ground, very sharp cutting edges without bevel. Precision shaped tips cut wires resting on a board from 0.2 mm dia.. Shear cut with controlled micro cutting edge misalignment for the most precise cutting of even the thinnest of wires and for a long service life. Joint with stainless steel rivet. Extremely smooth movement for minimum operator fatigue. With opening spring and opening limiter.