50 New 4.5mm 12k Gold Filled Open Jump Rings

• This is a set of 50 12 karat gold filled round unsoldered open jump rings
• These are for connecting jewelry parts such as clasps, charms, links, etc
• Jewelry that is gold filled has gold content equal to 1/20th or more of the total weight of the metal in the piece
• Each measures 4.5 mm (3/16") in diameter