HP Titanium Stud Ends - Opal Internally Threaded/Black Zirconia Threadle…

both ends - - from a professional high quality designer, Invictus Body Jewelry - made from the highest quality piercing material second only to rare metals, 6AL4VELI ASTM F-136 implant grade titanium - high polish titanium finish - for 18ga/16ga posts 3mm Threadless Black Zirconia - 3mm end diameter - threadless end to ensure no irritation, made for threadless posts only - gem made from Black Zirconia 4mm Internally Threaded Bezel Set Purple Opal - 4mm end diameter - internally threaded screw end to ensure no irritation, made for internally threaded posts only - gem made from Purple Opal, bezel set Brand new, never used or worn! Bought the 3mm too small for my piercing, and the 4mm the wrong thread type for my preference