loop attached. I prefer the closed loop because, since the loop is made of thin wire, it can pull open if not soldered. This is extra security. They are stamped .925. You'll receive 20. If you want more, check my shop for larger quantities, or convo me. There is also a listing of 100, 50, and 10 in my shop. I have 6mm spring rings listed in my shop. I also have gold filled spring rings, check below for links to these items.
6mm Sterling Silver Spring Ring:
5mm Gold Filled Spring Ring:
6mm Gold Filled Spring Ring:
10 5mm Sterling Silver Spring Ring:
50 5mm Sterling Silver Spring Ring:
100 5mm Sterling Silver Spring Ring: