A tiny diamond-shape with a flash of glitter from the clear zirconia in the middle, this micro-sized stud is flat on the back and so comfy for your ear.   A Cords Club exclusive, this flat back stud is custom designed by us. We spent months testing and perfecting them before adding them to our site.   This listing is for a single ASTM F136 implant grade titanium push-pin flat back stud. Note the sizing below, as this micro stud is tiny enough to get pulled into a larger-gauge or stretched out piercing hole.   Measurements: Post measures at 1/4 inch (6mm) length, with a 4mm disc on the back. 18 GA (1mm). Front is approx. Refer to listing images to get an idea of the size of the stud on-ear. Check your own ear measurement before ordering. Materials: ASTM F136 titanium, 18k PVD gold plated ASTM F136 Titanium (for gold color)   Care: These are tarnish-proof and waterproof. With all items of this material, if you come into contact with chlorine or salt water, cream, lotion, perfumes, etc. Rinse in water and dry if this does happen.  When not wearing, store in a dry, cool place.   *Please see site return policy for more information regarding flat back studs!