High Torque Air Impact Wrench 1.27m Drive, 1900 Nm, 90-120 PSI EfficiencyAir Impact Wrench 1 2" Square Drive 1400ft lb Nut busting Torque 90 120PSI Busting Breakaway Torque Lightweight Design Ergonomic Design Torque Adjustment Quiet Tuned Exhaust System One Kit For Every Project Square Drive: 1 2",Max Torque: 1200 ft lb,Operation Pressure: 90 120 PSI,Air Hose: 3 8"ID,Max Loosening Torque: 1400 ft lb,Free Speed: 8000 RPM,Working Torque: 1000 ft lb,Avg. Air Consumption: 6. 5 CFM,Main Material: Plastic Steel