The Jet Super Duty Impact Wrench features a pinless hammer impact mechanism that conveys power directly to the anvil and has fewer parts for less vibration and maintenance. The heavy-duty industrial construction provides durability and long tool life. The wrench also features a variable speed trigger, built in regulator and easy-to-reach forward/reverse switch for excellent operator control. The JET-3800P has a pistol grip design with a center balanced hanging ring. ADDITIONAL SPECIFICATIONS: Square Drive: 1"; Bolt Capacity: 1-1/2"; Anvil Retainer Type: Ring; Max Torque (ft-lbs): 1400; Working Torque (ft-lbs): 280-1120; Free Speed (RPM): 4700; Air Con. (CFM): 57; Air Inlet (NPT/IN): 1/2; Air Hose (ID/IN): 1/2; Vibration Value: 8; Overall Length: 1-1/16"