Gold Ball Closure Ring.
This ring is surgical steel coated in gold. 
The thickness of this ring is 1.6mm. Your current piercing will need to be that thickness for this hoop to fit. In addition, there are two diameters; 10mm and 12mm. Again, you will need be certain that this diameter will fit your piercing.
For hygiene reasons, returns and exchanges are not accepted on any body jewellery. This does not affect your statutory rights.