I use these jump rings regularly - to connect stringing wire to clasps and sometimes as the opposite "end" to a spring clasp. They are a great size for my jewelry, especially necklaces that are made from 6 mm or smaller beads.
Item feels very delicate but as strong enough to hold up to a lot!
I like using these for bracelets and necklaces. I don't have to worry about them coming apart.
This product is exactly as pictured and what I need.