I ran out of one of the connectors that came with it, so ordered it in stock. I used to use regular connectors that I had to attach my own heat shrink tubing to, so I ordered the ones that had heat shrink tubing built in to make the connections much easier. The connectors appear to be of good quality. They are packaged in a case that holds the connectors well. I haven't used any of these but they work great for my crimping tool. I assume these connectors will work just as well as any other.