Neiko 31393A Pin Clutch Air Impact Wrench, Drive, 3/4"/1000 Ft/lb. Pin clutch mechanism of the air wrench provides a powerful impact while loosening nuts with a max torque of 1000 ft/lb Minimal vibration resulting in a much quieter operation Keep debri away from your face and interfering with your work with the bottom handle exhaust Pistol like grip with finger grooves provide a sturdy yet comfortable grip while performing heavy work Specs: the impact wrench has a free speed of 3800 rpm, sound level of 90 dB, 90 PSI air pressure, 3/8" air inlet, and 12 CFM air consumption