57Y10  (WES-AW-22A) (CN-48)

Torch & Machine End Power Cable Fitting, 150 Amp Air-Cooled for poular  WP-9, 17 series 150 amp air-cooled TIG power cables. "A" Size, 3/8" x 24 right-hand male current nipple, 

Note:
Use with FAL-500, or FAL-525 hose ferrule depending on your power cable hose matierial and size.
There is an art to installing these fittings.  Great care should be taken to get the proper cable crimp for good electrical connection, making sure the cable does not bunch-up inside the hose which will cause a gas flow restriction.