Choose from a variety of earring backs for use with posts and ear wires, including best sellers and superior quality styles! Hypoallergenic options include sterling silver, karat gold fill, rubber, and nylon. You'll also find base metal earring backs including stainless steel, brass, bronze, and aluminum. Types of earring backings include butterfly nuts, earring stoppers, rubber-grip nuts (aka clutches), and mechanical-grip clutches. Wholesale prices are available when you buy in bulk. Choose your backs separately from your posts and hooks to get the exact match that works for you.