IMPACT WRENCH 1/2 DRIVE 7000RPM 2.3KGPISTOL STYLE. TORQUE 420FT LBS (569NM)1/4 NPT FEMALE THREAD FOR AIR HOSEThis impact wrench features a 1/2" drive, 7000RPM motor, and 420ft-lbs of torque. Its pistol-style design is powered by an air hose connection via its 1/4 NPT female thread.