SPECIFICATIONS: Square drive: 3/8 Capacity bolt size: 3/8 (10mm) Free speed: 180 RPM Max. torque: 60 FT-LB (69 N-M) Air inlet (PT):1/4 Air hose (ID): 3/8 Avg. air consumption: 4 SCFM Working pressure: 90 PSI (6.3 BAR)