Silver-tone Illusion Tunnel Plug Men Unisex Magnetic Steel Earrings 6mm No Piercing. These in style illusion tunnel plug earrings are the perfect accessory for a person looking for non-pierced earrings! They work as either men earrings or as women earrings. These silver tone anodized stainless steel magnetic clip on earrings are 6mm in diameter with a removeable O Rubber Ring. Diameters available: 6mm 8mm and 10mm. Warning: Do not use in the nose or mouth. Inhalation and aspiration hazard. Not recommended for children under the age of 13 without parental supervision. Keep out of the reach of infants.