7 Gem Nipple Clicker.
Clickers are Sold Individually. 
This product is made from surgical steel.
The size of this clicker is a 1.6mm x 14mm. This is a 'Standard' for a nipple piercing, however, everyone is different. You will need to be certain the clicker is the right size for you.For hygiene reasons, returns and exchanges are not accepted on any body jewellery. This does not affect your statutory rights.