I made my own 2 gauge whips and extensions for my Lincoln Electric AC-225-S buzz box a few years ago using Lenco LC-10 quick connects and Lenco ground clamp and stinger. I bought a new Lincoln Electric 180i MP DV Weld-Pak and these are the needed adapters to connect my own heavier leads with LC-10 connectors to the DINSE receptacles on the new welder. I did have to run the locking lug over a bastard file for a few passes in order for these adapters to fit. The pugs were a little rough and just didn’t quite fit into the path inside the receptacles. Just a little touch up with the file and they fit and locked right in. The round diameter fits nice and tight.
This product does exactly what it is designed to do. Fitment to both dinse and cam connections are snug and accurate.