This Chicago Pneumatic 1/2in. heavy-duty air impact wrench with Dyna-Pact oil bath clutch to deliver smooth operation and extended durability. Delivers power and economy for general repair, transmission work, exhaust systems and body shops. Key Product Specs Drive (in.) 1/2 Average Air Consumption (CFM) 3 CFM at Load 15 Speed - No Load (RPM) 8400 Max. Torque (ft.-lbs.) 425 Working Torque (ft.-lb.) 25 - 280 Inlet Size (in.) 1/4 Min. Hose Size (in.) 3/8 Standard Bolt Capacity (in.) 9/16 Variable Speed Yes Tool Length (in.) 7 Tool Weight (lbs.) 5.2 Additional Product Specs * One-hand pushbutton forward/reverse power regulator * 4 positive power settings * Ultimate power in reverse * Handle exhaust with 360° air inlet swivel * Applications: Overall automotive service, body shop, farm, light truck work, etc.