Specifications: Model: URW-12NA Air Consumption - ft3/min: 25 Air Inlet Thread N.P.T. - in: 1/4 Free Speed - rpm: 100 Max Hex Socket Size - in: 1.0 Max Hex Socket Size - mm: 27 Max. Torque - ft-lbs: 57.84 Max. Torque - Nm: 78.4 Overall Length (approx) - in: 16.1 Overall Length (approx) - mm: 408 Weight - lb: 6.6