This rugged Ingersoll Rand air impact wrench delivers 375 ft.-lbs. of torque. Min. Hose Size (in.): 3/8, Average Air Consumption (CFM): 4.3, CFM at Load: 24, Standard Bolt Capacity (in.): 1/2, Tool Length (in.): 7 1/8, Tool Weight (lbs.): 5.3, Drive (in.): 1/2, Inlet Size (in.): 1/4, Max. Torque (ft.-lbs.): 450, Variable Speed: Yes, Noise Level (dB): 90.3, Speed - No Load (RPM): 7,400, Working Torque (ft.-lb.): 25-200