Features: 1,000-volt rated for "Live Line" applications. Exceeds International Standards: IEC 60900:2012 and ASTM F1505. Engineered Nylon 11 injection molded to tool for maximum personal protection. Virtually indestructible – cut, abrasion, and impact resistant. Withstands temperature extremes from -40°F to 158°F (-40°C to 70°C). Meets stringent requirements for CAT "C" – cold impact rating. Every tool is 100% inspected – tested to 10,000 volts / rated to 1,000 volts. Industry-Leading Lifetime Limited Warranty. Duke Energy 1619980 Insulated Tools Ltd 1000V Insulated 3/8" Drive Hex Key Socket - 1/2" 02793L