This jump ring can be used in the following chain maille techniques: European 4-in-1, Byzantine, Turkish Round, Half Persian, Helm Weave (also requires 19 gauge 5.17mm inner diameter jump rings)
Outer diameter: 5mm (0.20 in)
Inner diameter: 3.17mm (0.12 in)
Thickness: 0.9mm (0.04 in) approximately 19 gauge
These lead and nickel free products are manufactured in China.
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