Pack of 20 sterling silver
3mm open click and lock jump rings. 0.6mm thick
(photo shows only 10 but pack price is for 20)
These are special jump rings which if instructions are followed(see below) are more secure than general jump rings and a good alternative for a secure closure instead of soldering.
Use two smooth chain nose pliers to grip the sides of the jump ring at the 3 and 9 o'clock positions, with opening at the top .Twist the right side of the ring away from you enough to fit your chain, charm, or finding onto the Jump ring
Then when you are ready to close twist the right side back toward you a quarter-turn past the closed position then bring your Jump ring back into closed position. As you twist back, very gently push the right side in just enough to make sure that the edges of the two ends make contact . You should hear a click.
Twist the right side back and forth very slightly a few times while pushing inward to align the two ends. The ring is now secure and "locked".