20pc Stainles Steel 6mm Jump Rings Round Close but Unsoldered Nickel Finished... Quantity: 20pc Stainless Steel Jumprings, Close but Unsoldered, Round, Nickel Color Size:about 6mm in diameter, 2mm thick, hole:4mm. Connect acrylic and enamel beads together in long, layered necklaces, match similar or contrasting colors with glass beads, make your own chain-mail cuff bracelets -- the possibilities are endless. Lightweight and easy to open and close