A drop down jump ring alllows for a pendant w/ a jump ring to be attached or used with a split ring.
Split rings can be purchased separately.
This style of an enhancer is for the person who is crafting their own pendants, & may not be suited for who wants an instant fix, as this requires putzing with in adding pendants to. .
This item does come in a few sizes, & designs.
Also avaialble in YELLOW gold.
Take a look at the entire selection of enhancers offered. Each work a little differently for various needs.
If you need assistance is selecting which may be best for you, please inquire.