Drive Square: 12.5 mm (1/2"). Speed Without Load: 7000 RPM Max. torque: 450 feet at 610 Nm 2.6 kg in weight Three Piece Socket with Twin Hammer Mechanism (17 mm, 19 mm, 21 mm) Including Nitto, Italy, USA, and Europe types of connectors among others. Air Consumption: 5.0cfm or 142.5l/min Air pressure: 90 psi (6.3 bar) Length: 187 mm (7.3 in.) Weight: 5.7 lbs. or 2.6 kg Air Inlet: 1/4" 3/8" air hose packaged in a colored box