These Glue-On Stud fittings are from old stock, so the quality is amazing compared to the 'iron' findings that are sometimes sold these days. You will be confident to sell these, or put them in your own ears. Unless the wearer has an allergy to metal, these ear studs will be great. It is unknown what the make-up of metal in these comprises, as they are old stock, but I'm pretty sure the metal is brass-based.
Quantity per pack: 20 pieces (10 pairs) in this listing (not including backs)