The Chicago Pneumatic 3/4in. air impact wrench offers powerful performance and durability in a compact package. Features a twin hammer clutch for power and durability. Perfect for spring work, pinion nut and tractor pad removal, truck tire work and major engine teardowns. Inlet Size (in.): 3/8, Impacts Per Minute (IPM): 850, Working Torque (ft.-lb.): 100-950, Min. Hose Size (in.): 3/8, Speed - No Load (RPM): 6,300, Average Air Consumption (CFM): 7.5, Tool Length (in.): 8 13/16, Max. Torque (ft.-lbs.): 1,200, Tool Weight (lbs.): 11.6, Reversible: Yes, CFM at Load: 30, Max. Reverse Torque (ft.-lbs.): 1,200, Drive (in.): 3/4, Variable Speed: Yes, Hammer Mechanism: Twin