[Formerly SF869] Sterling silver oval jump ring in a 3.5x5mm size. This is the outside dimension. The wire is 23ga which measure 0.57mm. Oval jump rings work the same way as round ones but the oval shape keeps the pieces you are connecting with it away from each other. This gives some security in that small items like chain and wire will tend not to work themselves through the opening because gravity keeps them in the rounded ends of the oval.
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