1/2" DR. Mini Impact Wrench Mini design overall lengh 109mm with 1.35kg Nickel chrome molybdenum square drive Mechanism-jumbo hammer Air hose : 3/8" ID Air pressure : 90 PSI (6.2 bar) Avg. Air Consumption : 142L/min 5.0 CFM Sound : 101.02DBA Vib : 8.7 m/s²