6mm big and 0.7mm thick round jumprings (unsoldered), made of stainless surgical steel.
Sold per okg of 5g (approx. 40 jumprings).
Very strong, stainless and tarnish resistant
Surgical steel is highly tarnish resistant and a great alternative to sterling silver. If you need jewelry findings that last and does not cost too much, surgical steel is a great choice.