This sterling silver clamshell cup is the perfect way to finish your strung bead designs. Simply slip your beading thread through the open bottom of the clamshell, make a knot large enough to not slip back through, add a little glue to your knot if desired (it will keep your knot from coming undone), attach to a jump ring or other closure and pinch closed with a pair of pliers. They can also be used to cover crimp beads on beading wire. Check out our crimp beads and other jewelry finishing ends for more beaded jewelry finishing options. Made in the USA.