Campbell Hausfield 1/2'' drive Impact Gun ,250 ft-lbs torque, has 5 torque settings turn knob to desire setting located next to air nipple,push in reverse and forward button ,also comes with 1/4'' air nipple,used 8 times on my truck takeing off lugnuts and takeing off alternator ,starter and compressor , i have also used it to take off blades on mowers and nuts on flywheels and also PTO clutches on mowers,has some fine scratches but works great.Needs 90 psi minimum to put out 250 ft-lbs or torque,it has been oiled after each use with air tool oil.