Very good quality and connections are clearly marked. Installed on a SOOW 10/4 cord for my generator which is a 3/4in. thick flexible cord, and all went well. I don't think it would handle a bigger cord, but I am happy with how it installed. It's just like a finished purchased cord. Very happy I did this myself as I ran a cord from my electrical panel to a outside wall plug for my generator. It was a good DYI project and I sure saved a bunch of money. Took me a little longer than if I hired it out, but It's about keeping my money for other things.