FPI 30150TW38I High Voltage Double-Insulated Torque Wrench is tested to 10,000 volts and rated for use up to 1000 volts AC and 1500 volts DC. The 3/8" drive torque wrench has a 30 to 150 inch/pound range and is designed to tighten critical connections on bus bars, battery racks and power panels. Features an audible click and feel impulse, low friction torque control mechanism. Certified of ± 4% accuracy. Replacable sleeves if ever damaged