While most commonly used in earring designs these can also be used to hang charms and dangles on necklaces. Easily remove the wire from one end, add your beads, charms, dangles, etc and close. All of the hoops have a loop at the top so you can easily add them to earring findings or attach jumprings to hang on chains. Some of the hoops have an extra loop so that you can add a dangle to come down in the center of the hoop. Wire is 21 gauge, 0.71mm thick so you can add almost any bead to these.