This cord end may add a delicate look to your design but it is just as hardy as the rest of them. The four prongs have a small protrusion at each end designed to bite into the cord and hold it permanently in place. Measures 5.35mm x 11.5mm and fits 2mm cord.
Sold by the pair.
Since I'm the kind of beader who wants to feel confident my jewelry will last, I prefer this type of cord crimp with the articulated prongs for a sturdy, solid grip. I also use Tool Magic on my chain nose pliers so I can compress the prongs without concern of leaving a mark. If you don't have Tool Magic, masking tape wrapped around a few times also blunts the hard edge of the plier jaws without losing any force! This is the best leather crimp I've found.