SP Air's Lightweight Composite Impact Wrenches, Nos. SP-7825S and SP-7825, have a double hammer clutch and offer the SAS (side and side) system for one-hand operation of forward and reverse. An air regulator and handle exhaust are built into the base of the unit. Unit specifications include a square drive of 1/4" and bolt capacity of 3/8", a maximum torque 94 ft/lbs, a free speed of 17,000 rpm, a viibration level of 4 m/s, and a sound level of 84.2 dB.