These earring backs are made from high-quality 304 stainless steel and finished with a layer of real 18K gold plating for lasting shine and resistance to tarnish. Each butterfly-style ear nut measures approximately 6×4.5×3 mm, with a hole size of 0.8–1 mm to fit most standard earring posts securely.

Their smooth, polished surface and classic butterfly design provide a comfortable, reliable hold, making them a practical choice for both everyday wear and professional jewellery assembly.