Anyway, as you could see, cable goes through the cap center hole, then individual wires are separated and go into their specific place, still in the cap. Then you cut the part of the wire that sticks out. Then, finally, you place the whole "assembly" (cable + cap) on the patch panel - a notch will guide you and insure proper positioning - and finally you twist the rotating part of the cap. That will screw the assembly in place, and press the cables and insure electric contact. I've done this quite a few times and it never failed.
I am really surprised there's no company to own/patent/brand/sell this. It's a clever product and using it is faster than explaining it in words.

Oh well.


edit: unless there's some weakness I am not aware of, but I've been using it for two years without issues. It's CAT6, supposedly, and I do get 1Gbps full speed on virtually anything connected to it (NAS, servers, APs, etc.).