Central Pneumatic 1/2" Air Impact Wrench Model 95310 2 Torque 250 ft-lbs 

Bolt capacity: 5/8"
Max torque: 250 ft-lbs
Air requirements: 5 cfm@90 psi
Hose size: 3/8"
Air inlet: 1/4" npt
Max speed: 7000 rpm