McMaster 5552A101 Impact Square Drive Size Adapter, 3 4" Female x 1 2" Male 24WJ88 Wear Resistant Inlet Connection Gender Wear Resistant Inlet Connection Gender Female Maximum Operating Pressure 3 RoHS Compliant Product Type Manual Air Control Valve Exhaust Port Connection Type Threaded Body Style Inline Operating Pressure Minimum 0 psi Lubrication Lubrication Not Required Valve Port Connection Gender Female Operating Temperature Minimum 32 Degrees F Operating Pressure Maximum 150 psi Operating Temperature Maximum 175 Degrees F Coefficient of Volume (Cv) 0 the male side to your socket Use with an impact wrench that has a pin style socket retainer