This Listing is for a set of 50 Antiqued Copper Twisted Oval Shaped Jump Rings that measure 8x6.5mm in size and are 16 gauge (1.2mm thick). This group of twist rope jumprings are soldered closed and the opening measures 4mm at the narrowest part. Handcrafted from solid genuine copper, each jump ring delivers the durability and warm aesthetic that discerning jewelry makers demand.