STEELMAN 50094A 1/2-Inch Drive Aqua 140 ft-lb Torque Extension 8-INCH EXTENSION - Torque extension is 8-inches long to allow easy clearance and prevent damage to wheels by a too close impact wrench RESILIENT STEEL - Made of durable and resilient chrome molybdenum steel PREVENT OVER-TIGHTENING - Prevent over-tightening that can lead to premature failure of wheels, wheel studs, and rotors POWDER COATED - Powder coated aqua for additional corrosion resistance and to easily identify it among other extensions and tools FLEXES TO LIMIT TORQUE - When 140 ft-lb of torque is reached the extension will flex and absorb additional impacts instead of continuing to tighten 1/2-INCH DRIVE - Both male and female ends are 1/2-inch drive for use with heavy duty impact wrenches and sockets CALIBRATION FREE - With a pre-determined maximum allowed torque and no moving parts it is maintenance and recalibration free