3 sets (36 total pairs) of 12 Pair Mixed 3 MM Colored Glass Foil Back Stones in a Birth Month Set Sold per Dozen (You get 1 pair of each Month) Comes with Butterfly Earrings backs, are grooved friction post for secure fastening. All earrings exceed all F.D.A / E.C requirements. Earrings are sealed and sterilized in individual packages. Earring Dimension: Regular Size 3.0 mm *EXTRA 10 PAIR OF SILVER BALLS* Additional Details ------------------------------ Product description: 3 sets (36 total pairs) of 12 Pair Mixed 3 MM Colored Glass Foil Back Stones in a Birth Month Set Sold per Dozen (You get 1 pair of each Month) Comes with Butterfly Earrings backs, are grooved friction post for secure fastening. All earrings exceed all F.D.A / E.C requirements. Earrings are sealed and sterilized in individual packages. Earring Dimension: Regular Size 3.0 mm *EXTRA 10 PAIR OF SILVER BALLS*