8 mm dip-coated insulation in a 1/2" VDE insulated socket Two-layer colored insulating coating with a chrome plating and anti-corrosion treatment suitable for operating on live equipment up to 1000 volts in accordance with IEC 60900 composed of high-performance alloy steel 12 point metric sizes, bi-hex profile Standards for Dynamic-Drive Profiles: ISO 2725/1174 DIN 3124/3120 Two layers of coating that change color to indicate danger or safety This establishes a visual warning system in addition to offering protection. The user will be alerted if the outer layer of insulation is damaged because the lighter color underneath will show through. At the conclusion of the manufacturing cycle, every single tool is tested to 10,000V for 10 seconds.