1/4" Screwdriver with 1800 rpm. It is lightweight andreversible. Includes internally adjustable clutch, rear exhaust and precision bearing and gears. Rear exhaust directs air away from the operator and muffles the exhaust noise. Torque range of 45 - 115 and 90psi max. other torque range springs are available from 20 to 145 in/lbs.We ship APO, FPO, International and combine shipping.