WHAT DOES 7MM STUD EARRING MEAN?

According to the type of starting earring the customer has picked, the piercer then inserts the jewellery in to the end of your needle or cannula sheath, and guides it through the new piercing possibly forwards or backwards, And eventually attaches either a clasp (to get a standard earring post) or labret stud (if a flatback labret has long been ut