PIERCE ME (6pcs) Septum U-Shaped & Staple Ring Retainers 16G Package: 6pcs of Retainers (4pcs U-Shaped & 2pcs Staple Shaped) 16G U-Shaped Dimension: W:12.6mm H:17mm Staple Shaped Size: W: 6mm, H: 4mm & Length: 1/4" Titanium Ion Plated & 316L Surgical Steel Septum Retainers