This is a NitroCat 3/8" Xtreme Torque Impact
Wrench with Twin Hammers, made by Aircat Pneumatic Tools.
This impact is the strongest 3/8" impact in its class, and is
recommended for heavy duty applications. This impact features 700
(ft-lbs) of Loosening Torque and 1,750 Blows Per Minute. The
twin hammer mechanism consists of 2 hammers in a closed cage which
rotates around the anvil. This design allows the hammer to hit at the
same time on both sides of the anvil. This impact is made with a
durable lightweight composite housing and ergonomically designed
handle. Air Inlet: 1/4" NPT and Air Flow Pressure: 90 - 120
(psi)