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. Standard Bolt Capacity in. 9/16, Reversible Yes, Variable Speed Yes, Working Torque ft.-lb. 25-310, Drive in. 1/2, Min. Hose Size in. 3/8, Tool Weight lbs. 5.1, Average Air Consumption CFM 3.7, Max. Torque ft.-lbs. 425, Speed - No Load RPM 8,400, CFM at Load 15, Max. Reverse Torque ft.-lbs. 425, Tool Length in. 7 1/2, Inlet Size in. 1/4. 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.