* Metal: Sterling Silver * Outside Dimension: 4 mm * Inside Dimension: 2.72 mm * Thickness: 22 Gauge * Wire Shape: Round * Jump Ring Shape: Round * Jump Ring: Open * Finish: Shiny Wire Size: 0.025" x 0.64mm Outside Diameter: 0.157" | 4.0mm Inside Diameter: 0.107" | 2.72mm These .925 sterling silver open jump rings are a time-saving foundation in jewelry design. Whether you are attaching chains to components, using rings as whisper-thin spacer beads, or weaving chain maille interlocking loops, pre-made and precisely sized jump rings help take the guesswork out of your jewelry designs!