A wingnut, also known as an earring back or butterfly back, is a small, lightweight piece that secures the earring post in place. Shaped like a tiny butterfly or wings, it fits onto the back of the earring post and holds the earring snugly against the earlobe. Made of your choice of vermeil, 14k, or 18k, the wingnut is easy to slide on and off, ensuring your earrings stay secure while being comfortable to wear throughout the day. *This item is not eligible for discounts or promotions.*