TITANIUM Internally Threaded Eyelets (1 gauge - 1 inch)ONE PAIR of SOLID ASTM F 136 TITANIUM eyelets that are internally threaded. These tunnels have a screw on back piece so that you can insert them without having to force a double flared plugs in your piercing. This makes it much easier for people that have a hard time fitting double flared plugs in, or also those that just have a freshly stretched piercing and want a plug that is easy to insert. Titanium is the highest grade metal available, super