The Knipex VDE range of pliers and cutters are manufactured to DIN ISO specification and tested to EN 60900:2004. These expert quality tools are tested to 10,000 volts and insulated to 1000 volts AC and 1500 volts DC and are suitable for live work. WARNING: When working on electrical installations, it is safest to disconnect these systems from the power supply. Only a skilled and qualified electrician should work on live installations and then only in accordance with the relevant industrial safety standards.