Crimp covers go over crimps creating a look of a sterling bead just at the edge of your clasp. A very classy finish. Use a crimp tool to close it, or if you're REALLY CAREFUL you can try to close it with a chain nose plier. But be careful not to indent the metal, unless you like the "weathered" look!

This size covers a 2mm crimp bead nicely that has just been crimped flat. No need for the two-part crimp process with the crimping tool, saving time and guaranteeing that your product stays together!

And copper is the new hot metal now. Nice to have the details to go with your copper designs!