Specifically I mean the connection end. No manual or documentation I can find shows an end like this, and I can't figure out if I'm missing a piece, but this is different than every WP-17 I can find.

Hi guys, could use a little help here. Bought an used TIG (Lincoln Precision Tig 225) and it came with half a dozen torch heads, but I can't quite figure out how they are intended to attach. Are these 2pc heads for a 2pc cable? Please help, hours spent trying to look up the numbers on the NOS 2014 M...