~ Sold in units of 10  pieces

4 mm /20 Ga Gold Filled open jump ring

20 gauge = 0.032" = 0.81mm

outer = 0.157" = 4.00mm

inner= 0.093" = 2.35mm

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Gold Filled is composed of a solid layer of gold mechanically bonded to a base of either brass or sterling silver. Gold Filled has 100% more gold than gold plating and is much more valuable and tarnish resistant. The gold will not flake off, rub off, or turn colors when maintained and not exposed to harsh chemicals. Gold Filled jewelry offers quality gold at an affordable price.