Increases Your Efficiency: adapter enables socket wrench glands with TorqueVario-S electric. Offers you full protection: each tool individually at 10 000 V AC tested and approved for 1.000 V AC. When working on live parts is the safety of the user in the first place. The socket wrench adapter makes it possible in combination with the isolated Wiha torque screwdrivers TorqueVario ® S electric controlled tightening and loosening cap screws and nuts. The insulated socket wrench adapter is in accordance with the international standard IEC 60900 a Parts Inspected and enables a safe working on live parts up to 1000 V AC. Standards: tested according to IEC 60900. Application: safe installation of terminals and bushes, wire connections and screw of power rails. For work within the range of live parts to 1.000 V AC.This text is machine translated.