Outside Diameter: 4mm Inside Diameter: 2.48mm Wire Diameter: .76mm Add some sparkle to your work table with these 14Kt yellow gold-filled open round jump rings. The glitter comes from a spiral diamond-cut pattern over the whole ring. They're a time-saving foundation in jewelry design. Whether you are attaching chains to components, creating foundations for wire wrapped components, or weaving chain maille interlocking loops, pre-made and precisely sized jump rings help take the guesswork out of your jewelry designs!