Clearly marked with the official 1000-volt rating symbol.Two layers of insulation provide protection against electric shock.Klein insulated tools exceed IEC 60900 and ASTM F1505 standards for insulated tools.Individually tested to exceed standards.Cushion-Grip handle for superior torque and comfort.Tips are profilated to provide a more consistent geometric symmetry than conventional Phillips-tip screwdrivers.Durable, two-layer, molded insulation to meet or exceed all ASTM and IEC standards for insulated tools.Made in the USA.This sku replaces 603-3-INS.