Vintaj 20 Assorted Earwires. 20 Gauge. Nickel Free. 4 Pair ER40 27x15mm Round Loop Ear Wire & 6 Pair ER20 20x10mm French Ear Wires Vintaj Natural Brass 20 Earwires, that's 10 pair. 20 Gauge Wire These items are an essential for earrings. Use Vintaj ear wire to finish your Vintaj jewelry with a distinctive flair and uniform look. Nickel-Free Brass ear wires are great for those with sensitivities to metal. You get 8 of the ER40 - 27x15mm Round Loop Ear Wire and 12 of the ER20 - 20x10mm French Ear Wires Made in the USA using eco-friendly methods. Lead and nickel free.