material: premium flex plus carbon steel drop forged, entirely hardened and tempered cutting edges induction hardened head polished surface finish: trivalent chrome plated according to ISO 1456:2009 heavy duty double - component handles made according to standard ISO 5749 Ergonomic handles With ergonomic handles and a specially designed grip, surface Unior pliers provide maximum comfort at work and high efficiency with minimum strain. Surface protection The pliers are made of excellent steel with special improved composition. Several models come with additional chrome surface protection. High precision With their perfect design and technological superiority, Unior pliers ensure a high precision hold in any instance of general or dedicated use. Standards DIN ISO 5749 Documentation Heavy duty diagonal cutting nippers - 466/1BI