As a result of my tests I determined that these connectors are not well-made .The Industrial and Scientific category requires reliable products, but these failed to live up to that standard. The connectors do not fit snugly, which led to connectivity issues. The only pro is their affordable price. However, the cons outweigh this as they require time and frustration to install, making them not worth the hassle. Avoid these connectors if you're after a proper and reliable electrical connection..