500 Pack - CleverDelights 4mm Jump Rings - Dark Black Color - 21 Gauge (.7mm Thick) Diameter: 4mm (.15 inch); Thickness: 0.7mm (21 gauge) Dark black color A popular connector used for attaching charms or clasps to necklaces, bracelets, and other jewelry Made from strong metal alloy for a sturdy hold Exclusive CleverDelights brand -- Ships from a USA warehouse by a USA owned company