These Cymbal Rozos III Superduo Bead End Antique Silver are specifically designed to fit with the two hole Superduo beads.
The three legs create two gaps in which one end of the Superduo bead will sit. There is a loop at the top of this component for connecting to your clasp.
As the twin bead is almost identical in shape and size as the Superduo then these will also work with the Rozo bead ends. Finished in an Antique silver plating.