Titan Highline® Internally Threaded Jeweled Disc for Dermal Anchor. The Jeweled Disc with 1.2mm threaded screw fits on any internally threaded Piercing jewelery and Dermal Anchors with 1.6mm thickness. They are available in sizes 3.2 – 6.0mm! The Swarovski crystal, which is polished to sparkle in many facets of a color, is available in eleven different colors in Titan Highline: Amethyst (AM), Light Blue (LB), Crystal Clear (CC), Rosé (RS), Aurora Boreale (AB), Emerald Green (EG), Yellow (YE), Light Green (LG), Red (RE), Sapphire Blue (SB) and Black (BK).