I've got some vintage small silver and sterling silver chains, but I
don't know what they are called or what they are used for.

The silver items consist of chains 55mm long and about 2mm diameter. On
one end is clip-like device. The other terminates into something that
looks like a coat hanger about 15mm long. But this is also a sort of
clip, and you can attach things to it (pendants?).

The sterling-silver items also consist of chains 55mm long, 2mm
diameter.They just terminate in rings slightly bigger rings.

What are these items called? Thanks.