Proto Impact-Wrench Drive Adapter, 1" Female, 3/4" Male, Black: * Precision drive sizing ensures a perfect fit with both your impact wrench and impact-wrench accessories * Ultra-reliable, heat-treated high-tensile metal eliminates the possibility of spring effect, preserving maximum operational torque, while minimizing the potential for tool failure * Adapter is designed specifically for use with air-, electric- and hydraulic-powered impact wrenches * Type: Adapters & Extensions * Head Type: 1" Drive-Female, 3/4" Drive Male * Opening Size: N/A * Applications: Automotive Maintenance