Snapeez Ultraplate Jump Rings Silver, Gold
From the Snapeez manufacturer: "Ultraplate is a registered trademarked plating process. Ultraplate results in a plated surface that is seven times the thickness and significantly more durable than the industry standard used on most fashion jewelry components."
From the store owner: I use these jump rings exclusively in my Jewelry designs. Unlike the standard jump ring, the ends comes together almost seamlessly.