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 thanks to the improved leverage ratiowhen 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.