The screwdrivers in Klein Tools' 2-Piece Insulated Screwdriver set have two layers of insulation to protect from electric shock. A thick, exceptionally tough, high-dielectric white inner coating is bonded to the tool, while a bright orange outer coating is flame and impact resistant. Klein insulated tools exceed the IEC 60900 and ASTM F1505 standards for insulated tools, and are clearly marked with the official 1000-volt rating symbol.