Generation Series compact air ratchet wrench. Contoured handle to insulate user from chill and vibration. Finger operated trigger and textured grip allows added control even with greasy hands. Ideal for working in engine bays or other places with restricted access.1/4Sq Drive Compact Air Ratchet Wrench Generation Series compact air ratchet wrench. Contoured handle to insulate user from chill and vibration. Finger operated trigger and textured grip allows added control even with greasy hands. Ideal for working in engine bays or other places with restricted access. Model No. GSA634Model No: GSA634:Air Consumption: 4cfm:Brand: Generation:Drive: 1/4Sq:Free Speed: 180rpm:Inlet Size: 1/4BSP:Length: 185mm:Maximum Torque: 20lb.ft(27Nm):Nett Weight: 0.56kg:Noise Power/Pressure: 100/89dB(A):Operating Pressure: 90psi:Vibration/Uncertainty: 2.5/1.25m/s:PTDSEAGSA634