These chains are an ancient design called ” Byzantine, or “Dragons Mouth.” If you look closely, you can see the two dragons facing each other in the links. We love this chain, it’s incredibly well made, hand woven, and looks terrific with all of our designs. We designed the bullet shaped ends.This makes it fit easily into a variety of pendant bails. So it can be used with many different pendants or slides. It fits everything we make except for the Green Flash pendant.