Chicago Pneumatic CP734H & CP797 Pneumatic Impact Wrenches, 425 ft-lbs & 1,400 ft-lbs maximum torque, 90 PSI air pressure requirement, air consumption of 22 CFM & 50 CFM, metal construction, noise level of 96 dB & 102 dB, vibration level of 5.2 m/s² & 12.9 m/s².