Material: Rubber Color: Clear Finish Type: Unpainted The package includes: 1000 pieces of earring post studs and 1000 pieces of earring backs, for a total of 1000 pairs. [Earring Post Pins] Length: 12 mm Diameter: 5 mm Pin Thickness: 0.8 mm [Earring Backs] Height: 5 mm Thickness: 4 mm 1000 pairs of 5mm invisible earring blank pin studs, small head findings, plastic earring posts and clear rubber backs, ear stoppers, jewelry making DIY supplies #You might find a bargain here☆iroa♪ Opened for inspection and photography, but unused. ★ We generally do not ship on Saturdays, Sundays, holidays, and other long vacations. ★ Please refrain from purchasing if you are looking for perfection or are concerned about minor scratches or stains. ★ In some cases, we may remove the items from the box for shipping due to shipping costs. Thank you for your understanding. 18.38.1620