This simple Titanium Asia Trinity accessory is only 3mm across (with each of the 3 balls measuring 1.5mm). Ideal for ear piercings including tragus, cartilage and helix to add to your curated ear piercings. For internal threaded shafts measuring 1.2mm and has the standard 0.9mm thread on it. This attachment will fit internal thread Labret Studs, Bars etc