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