Specifications: Air Consumption - ft3/min: 22.0 Air Inlet Thread N.P.T. - in: 1/4 Average Air Consumption - m3/min: 0.6 Collet Chuck Size - in: 1/4 Collet Chuck Size - mm: 6 Free Speed - rpm: 18000 Noise Level - dB(A): 76 Overall Length - in: 7 23/62 Overall Length - mm: 196 Rated Horse Power - w: 375 Weight - lb: 1.76