Specifications: Air Consumption - ft3/min: 30.0 Air Inlet Thread N.P.T. - in: 1/4 Average Air Consumption - m3/min: 0.85 Capacity (Wheel Size)- in: 4 Capacity (Wheel Size)- mm: 100 Free Speed - rpm: 12000 Noise Level - dB(A): 88 Overall Length - in: 8 21/32 Overall Length - mm: 97 Rated Horse Power - w: 435 Type of Spindle: IN Weight - lb: 3.09