Joybeauti Stainless Steel Round CZ Cubic Zirconia Tunnel Plug Post Stud Earrings Hypoallergenic Stainless Steel & Cubic Zirconia Size: 6mm; Pin: 0.8mm (20 Gauge) Steel Color & Round Black / White CZ Cubic Zirconia (6 Prongs) Friction Back Post Pack of 2 Pairs