Aprilsky 3-8mm Unisex Body Jewelry Set Illusion Tunnel Plug Stainless Steel Earrings Screw Back Earrings (6 Pairs/Pack) Material: 316L Stainless Steel, Hypoallergenic Color : Steel & Black Size : 5mm (Diameter), 10mm (Total Length), 1.2mm (Pin Thickness) Quantity : 2 Pairs Function : Anti-allergy