This jump ring can be used in the following chain maille techniques: European 4-in-1, Byzantine, Turkish Round, Helm Weave (also requires 20.5 gauge 4.97mm inner diameter jump rings)
Outer diameter: 4.5mm (0.18 in)
Inner diameter: 2.97mm (0.12 in)
Thickness: 0.75mm (0.03 in) approximately 20.5 gauge
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