These handy all-purpose jump rings can be used for the female half of small clasps, hooks & other fasteners or to fasten the male half to your chain. They're perfect for earrings and can work on charm bracelets too. Make sure to give them an extra pinch with pliers to make sure the ends meet and stay closed. 14K rose gold filled. Measurements: 4mm in diameter. 22 gauge (.025") thick. Quantity: 20 Pieces