These connectors are well built, and seem sturdy and have nice design. For their price they are very good, far better than any of the copied Asian made connectors, but I just found them a bit more tricky to put together than the equivalent Neutrik NC3MXX, which just goes to prove why they are the market leader. Nothing wrong with them though, I just found they took longer to put together. Probably the best connectors I've seen on a low budget.
I used the male and female versions of these connectors to hook up multiple instruments in a practice room to a stage box. the strain relief connector fits most standard cable diameters. I used these together with the sssnake brand cables and am very happy with the end product.
Soldering was very forgiving as well, didn't take too much lead to put everything together and they survived when i messed up the wiring and had to de-solder.