The pliers & cutters in the series 15 , ESD ProfileLine are fine blanked from precision carbon steel (C70), have excellent cutter geometry and have been hardened to 54 - 56° HRC to reduce warping and stresses. The polished cutting faces and the non-reflecting phosphated surfaces are not just an eye-catcher, they also promote safe working and ensure a good view of the job. The black ESD sleeves conduct electricity away from the site and can help to avoid short-circuits and interruptions of the electric circuit. Danger! ESD sleeves do not provide protection to the wearer against electric shocks!