LOTOS WV01 3 Way Air/Argon Quick Switch Kit (for LOTOS 3in1/5in1 Machine) For air plasma cutter and tig welder Lotos 3in1 or 5in1 units CT520D, LTPDC2000D, LTPAC2500 Helps easily switch from air compressor to argon tank or from argon tank to air compressor Users don't need to disconnect and reinstall cables for all air or argon supply Light weight: 0.25lb Inlet/Outlet inner diameter: 0.46"