AirCat AIRCAT1100-K 1/2-Inch Kevlar Composite Twin Hammer Impact Wrench Working torque is 200-900 (foot-pound) and blows per minute is 1,350 in under load Free speed is 9000 revolutions per minute Average air consumption is 8 cubic feet per minute and air flow pressure is 90 - 120 (PSI) Sound level is 85 dBA Meets EU safety, health and environmental requirements