Specifications: Model: U-50DEC Air Consumption - ft3/min: 10.2 Free Speed - rpm: 2,300 Noise Level - dB(A): 78 Overall Length - in: 7.9 Overall Length - mm: 201 Piston Stroke - in: 0.8 Piston Stroke - mm: 21 Sq Drive Shank or Hex Bit Shank - in: 1/4 Hex Torque Range - ft-lb: 3.7 - 8.1 Torque Range - Nm: 5 - 11 Weight less Socket - kg: 1.5 Weight less Socket - lb: 3.3