6 piece screwdriver set with individually tested insulated screwdrivers in compliance with iec 60900 standards each piece was tested in a water bath at 10 000 v for safe working at the permissible voltage of 1 000 v the powerform plus handle provides comfortable ergonomic work avoiding blisters and calluses integrated hard grip zones are in place for high working speed while soft grip zones guarantee high torque transmission roll off protection prevents the tools from rolling away at the