
The threads on the cable locks are terrible, both sides were torn off before I fitted them. I work very carefully with copper. Once I received them in working condition, the connectors are difficult to assemble. I thought they weren't done right, so I took a memory and edited it. It helped when they got together, but once they've started being used, it's a whole different story to separate them. In general, the quality of these quick connectors is low, very low. The insulating material becomes unusable and discolors almost immediately. I bought these thinking they were made in the USA. I highly doubt they were made in the States. Save money and buy another set. I had and am ordering another set of quick couplers after struggling with them for a year.