Specifications: Air Consumption - ft3/min: 18 Average Air Consumption - m3/min: 0.50 Drilling Capacity - in: 5/16 Drilling Capacity - mm: 8 Free Speed - rpm: 1600 Noise Level - dB(A): 76 Nominal Chuck - in: 5/16 Nominal Chuck - mm: 8 Overall Length (approx) - in: 7/1/8 Overall Length (approx) - mm: 180 Type of Spindle: 3/8-24UNF Weight - lb: 2.64