• Material: The hypoallergenic earring posts and backs are made of 925 sterling silver (925 embossed); safe, non-toxic.
• Earrings Posts Flat Pad Size: about 12mm long, 6mm wide, the silver earring backs is 6 mm/0.24" in length, 3 mm/0.12" in thickness
• Earring Making Supplies Kit: Using these products, you can perfectly DIY earrings. Earring back fits most earrings
• The package includes: 25 pair earring pin studs, 25 pair butterfly earring backs