Design: DIN ISO 5749. Made of chromium-vanadium electric steel, hardened and tempered in oil. Polished head with opening spring, blades additionally inductively hardened (64 HRC). With high purchase, 20% reduced effort due to the improved leverage ratio when compared with normal side-cutting pliers of the same length. With welded-on hinge axle for heavy-duty use. Handles with multi-component plastic covers.