Feeling lucky? This ace of spades flat back stud is a stylish little wildcard—perfect for stacking or wearing solo when you’re going all in. A Cords Club exclusive, we designed this flat back stud from scratch. We spent months perfecting the size, weight, and amber color of this gorgeous design! This listing is for a single ASTM F136 implant grade titanium push-pin flat back stud. Measurements: 18 GA (1mm) Post is 1/4 inch (6mm) in length, with a 4mm disc on back.  Approx. size of shape is 4x6mm. Refer to listing images to get an idea of the size of the stud on-ear. Check your own ear measurement before ordering Materials: 18K PVD Gold Plated Titanium, Titanium Care: Water and tarnish proof with proper care. If exposed to salt water, chlorine, or lotions/perfumes, rinse off with cool water and gently dry. When not wearing, store in a dry, cool place. Do not pull, twist, or tug on your jewelry.