Offers you full protection: each tool individually tested at 10,000 V AC and approved for 1,000 V AC. Safe installation of terminals and joints, conductor connections and bolting of busbars. For working in the area of live parts up to 1,000 V AC. When working on live parts, the safety of the user is paramount. The insulated sockets from Wiha are the ideal tool for working on electrical systems. In combination with the insulated ratchet spanner or cross-handle adapter, the sockets can be used for tightening and loosening hexagon head screws. The insulated sockets are subjected to a routine test in accordance with the international IEC 60900 standard and enable safe working in the area of live parts up to 1,000 V AC. Only compatible with insulated ratchet spanners and cross-handle adapters from Wiha.