Pinch bail. Squeeze bail. Snap bail. They all seem to mean this one bail. So many descriptions in their names!
These bails squeeze together to allow you to slip on a pendant and string onto your cord easily. They are rather an old fashioned finding, but still one of the most versatile & simple to use.
Measurements: 10mm x 3mm wide at the widest point at the top
Quantity per pack: 20
How you hang your pendant will depend on how it will face the front. Check into how it will sit before you use this method. Your pendant piece will need a rather large hole, or it might need a joiner ring (but make sure it will still face the front).