Stainless steel earwire stoppers and earnuts can be used on all types of ear posts that we offer. Using earwire stoppers and earnuts, you can secure your earrings against loss. Stoppers and earnuts have antiallergic properties and even sensitive individuals tolerate them very well. Earwire stoppers and earnuts are made of the highest quality stainless steel 316L and they meet strict requirements for nickel, cadmium and lead content.