These are two pairs of 14k yellow gold small earring backs for THIN POSTS, and have been expertly covered in silicone. It enables easier secure backs to your post and stud earrings. The small China made earring nut is stamped. The earring backs are about 6mm diameter, 5mm thick, 2mm diameter nut. Mushroom style.
Silicone-Covered 14K Yellow Gold earring backs for thin posts