Jumpring Conector Mix, Anti Tarnish Sterling Silver Filled, 4-10mm Round, 18 Gauge. 5 Grams, Approximately 25-30 Jump Rings Mix of unsoldered round Sterling Silver Filled jumprings made of a durable outer layer of sterling silver surrounding a copper-alloy core silver plating for uniformity and are completed with an anti-tarnish coating Handles like sterling silver, jumprings can be soldered Sizes include rounds ranging from 4-10mm. Jumpring sizes and gauge are approximate