The knipex 03 01 series traditional combination pliers are equipped with hardened cutting edges for hard or soft wire up to 25mm diameter the pliers have all the signs of knipex technology and quality the oil hardened and tempered construction will give these pliers a longer working life knipex 03 01 series combination pliers have separately induction hardened cutting edges that are hardened to approximately 60hrc they have polished heads and pvc dipped handles these knipex pliers have gripping