Dip-coated insulation.3-layer safety colour code insulation.For working on live equipment up to 1000 V according to IEC 60900.The moveable jaw slides easily by operating the side screw.Made from high-performance alloy steel.Chrome plated and anti-corrosion treated finish.3 Multi-layer coating with different colours indicating safety, danger or high danger. Plus a 4th one in black to further protect handle edges.This provides protection as well as creating a visual warning system.If the outer insulation layer gets damaged, the lighter colour underneath will become visible and warn the user.Each and every tool is tested to 10.000V for 10 seconds at the end of the manufacturing cycle