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.