Am Tech 1/2″ Heavy Duty Air Impact Wrench. Delivers a maximum torque of 310Nm 230ft/lbs. Protective PVC guard. Average air consumption 5 CFM. Recommended air pressure 90 PSI. 1/4″ air inlet. Free speed 7000 RPM. Forward/reverse facility. Well balanced ergonomic design for continuous use. Ideal for garage, body shop and work shop use.